First we'll take a look into the basic strategies of TA : Kingdoms, here we'll take a look into general playing tips that would probably apply to most Real Time Strategy Games.

          Defense is the key to Offence, and Offence is the key to success. Having said that it means, you must build up defense's first, then build offence and then go for the victory. Although this is not the only way to play it is one of the more simplest and doesn't involve as much risk as other playing strategies. We'll first take a look at how to play like this.
          I suggest that if you want to play like this then you first should build your most basic unit factory. Barracks for Aramon ( Earth ), Enclave for Veruna ( Water ), a Beast Tamer for Zhon ( Air ) or the Cabal for Taros ( Fire ). If the map is completely water, or is around 70% or more water, and you are Veruna ( Water ) you could consider building a Sea Fort instead. But not assuming that I'll carry on. While this structure is building hold the Shift key and click on a mana spot near by to Que up a Lodestone to be built once the Factory is complete. Que 2 mana spots up, and then Que your Monarch to build several light defense's around this small base. Watch Tower for Aramon ( Earth ), Guard Tower for Veruna ( Water ), Death Totem for Zhon ( Air ) or the Caged Demon for Taros ( Fire ). Once the unit factory is complete order it to build a selection of units. 2 Builders, Mage Builder for Aramon ( Earth ), Priestess for Veruna ( Water ), Beast Tamer for Zhon ( Air ) or the Dark Mason for Taros ( Fire )., 20 - 50 tier 1 units. Possible mixes for armies are. Aramon ( Earth ) 20 Swordsman's, 15 Archers, 10 Horseman's and 5 Catapults. Veruna 25 Warriors, 20 Crossbowman, 5 Catapults. Zhon ( Air ) 20 Hunters, 20 Trolls, 10 Goblins. Taros ( Fire ) 35 Executioners, 10 Black Knights, 5 Zombies. Of these combinations of basic units Taros's ( Fires ) are probably the lest cabable, as they lack the variaty of the other armies. The Executioners are very powerful though. Apart from that I'll leave full unit statistics until later. At this stage you should have adequate defense but little mana. During the building of your tier 1 units I suggest you take your builder's and occupy more mana spots with lodestones and lay out more basic defense turrets. After this stage you are free to move onto building tier 2 units. From here on there are an endless amount of possibilities on how you choose to win. In a short and fast statement. You build Tier 2 and 3 units to attack the opposition and replace current defenses, you expand to control as much of the map as possible and beat the opponent. This is one way of building up to a mid game position and being in a good position.
But since there are no hard and fast rules, you are left to decide which playing style suits yourself. After playing like above, you will be at about the mid game stage. Where it is up to you how to win. to do from here may want to try these basic strategies first before reading further.   
          Other possible modifications to the above playing style are the slow grueling defense massacre. You build a factory, produce tier 1 units and play similar to before. But instead you don't rush to build tier 2 or 3 units and attack. But you instead build many of the tier 2 or 3 defense structures in long lines behind walls. And slowly progress around the map. This strategy takes a long time to win, but does so very successfully and there is little chance is losing a battle. Only play like this if you like long drawn out games.
          The early mass rush. Dreaded around the world, you quickly pump out mass's of tier 1 units and attack the opponent as quickly as possible. Possibly out numbering his early defenses easily crippling him. When at this time the second wave hits. You build the same as the first to begin with, but start sending waves of attackers over to his base, you expand quickly to control as much mana as possible. Not worried at all about defense. The only drawback to the mad rush is people hate it, and if your rush fails to win within 30 minutes you've probably lost the game. 

          In the basics we have had a look at how to build a formidable base defense, and how to start your road to victory. As well as 3 different modifications to alter your playing style to suit your needs. The first one described in great deal at the top ( defense then offense ), the mass defense and the rush are all formidable options in the game of war. 

Armies

          We will now take a look at each army and see their advantages, disadvantages. Weaknesses and pitfalls. So you can choose your best weapon and also so you know what to expect of the enemy.

          Aramon ( Earth )
Advantages:
          You have many types of Knights at your disposal, use them to your advantage. Flank opponents troops, run away fast when you are in a lose, lose situation.
          The aramon's trebuchets have a huge range. The longest in the game in fact. So use these in combination with scouts so you can see all and shoot all.
          These guys builders can put up a fight too you know. It's not recommended you charge into war with builders, but its good to know they can do a tiny bit of damage.
          Varied ground attack forces, arrows, swords, cannons. Many types, and in many varieties.
          Aramon is a side with a fair amount of good anti air weaponry. Mage Archers are very good anti air and watch towers work well also.
Disadvantages:
          Aramon has the weakest air force in the game. This lets other races have a major air superiority in any game you play.
          When you play Aramon you have the least versatility in your gaming style. You are pretty much stuck into a early game defensive play type approach.
          Veruna ( Water )
Advantages:
          Largest sea born fleet in the game. Not surprising as they are in fact water.
          They offer the most warped, and under priced, over powered air unit in the game. The Dirigible. Swarms of these kill entire worlds you know.
          Cheap Units, veruna have many excellent, and undercost units, in comparison to other armies.
          Don't let their main aim fool you. They have some of the best ground based units in the game. And their tier 3 units and some of the most deadly. Take the amazon knight, one useful thing to do is take several of these. Charge at a few enemy units. Then retreat, they'll follow not being able to fire, and your knights can keep firing while running.
          You monarch can swim. So if you need to get past a little water. Just take the dive and swim to the other small islands that your opponents cant reach.
          With all of their other advantages come the strong defense towers. They pack a punch, you can choose from a wide variety of turrets.
Disadvantages:
          No long randed mobile ground unit. That fires nice power packed shots.
          Monarch is the weakest of the monarchs and can be killed quite easily.
          Enclaves are the most expensive tier 1 building structure in the game. Giving you a slower start than other armies.
          You have no high power unit with loads of defense points at your disposal. 
          Zhon ( Air )
Advantages:
          Unit Builders are mobile and therefore can get closer to the enemy, and pump out mass units right in front of him. 
          Lodestones are 3x as strong defensively as other armies lodestones.
          Flying Monarch lets you move quickly around mana spots early on in the game. And lets you spread out over the entire map very fast.
          2 Powerful units at your disposal. The stone giant, which is a mobile indirect fire artillery unit and the kraken with is the most cost effective anti ship weapon in the game.
          Very cost effective tier 1 combat units.
Disadvantages:
          Unit Builders have alot less armor than other building structures and thus die alot more quickly.
          Tier 1 Builder ( Beast Handler ) cannot build other Tier 1 Builders ( Beast Handlers ).
          For the army of air, their air units are somewhat expensive and weak.
          They don't have walls, or gates or any early or mid game artillery units. They also only have a limited about of effective ground forces. 
          Taros ( Fire )
Advantages:
          Invincible and Invisible. Lokken can cloak. Although he doesn't have the button to cloak. You can cloak him by selecting him and hitting the K key. While standing still and cloaked he uses no personal mana. Therefore he can stay cloaked while still indefinatly. But if he moves he will soon drain mana and become uncloaked. That means if you cloak him and stay still. The enemy will have to walk very close or right into him to see him.
          Dark Mason and Lokken can build any of the tier 1, 2, or 3 building factories. And the tier 1 structure is the cheapest in the game.
          Sky Knights are the second most powerful air unit in the game. Blade Demons ( Tier 3 ) and Executioners ( Tier 1 ) are powerful and cost effective melee units and Fire Demons are excellent medium size/cost artillery units.
          Alot of Taros's ( Fires ) units have area affect spells.
Disadvantages:
          Black Knights and Skeleton Archers are weak inefficient ballistic units.
          You require three production facilities to produce a varied selection of ground units. You have no indirect fire artillery. And no late game hard hitting artillery units. Like the Trebuchets. 
          Temples with cheap take the longest to build of any production facility. You also have no cost effective way of dealing with ships.

Units

Aramon