"Without distributing your villagers in different resources , get them work in just one .When they finished it,try to next one,this help u a lot.
Build 20 villagers and send them to gold ,With two carry whole gold will be finished..." - Nabaraj Tiwari (NT)

"Build a castle near the enemy village, then send troops to there and fight . When they are getting low health, send them back to the castle. If the castle is attacked, it will kill the intruders. " - Monkky

"Even vilagers can be BIG killermachines.
try to get enemy units follow you're villagers to Guard towers or to a castle where the unit wil be killed before the villager gets killed (villager will get hurt when unit follows him).You can heal the vilager.And do this until enemy runs out of units" - peter

"When your enemy is hiding behind a wall of trees and is covering up the other side with castles, use siege onagers to wipe out the forest. There is a button at the bottom left hand of your screen. It is the quickest way to reach your opponent and you will most likely catch them by surprise." - there and back

" once you have a town in ashes build a castle where there town center was standing and use what walls they have left as your own defense (replace the gates) and send in villagers to build an army encampment and take what resources are left (this is called the trash can method)." - king rick

"if you are playing a random map get lots of sentry towers" - pompey