Once you hit feudal build towers around all his resources and TC. To tower do a fast feudal build and while you are going up send several villagers to stone and several villagers forward to his base. If you just want to be able to beat the AI the easiest way is to tower rush. If you want to get better at the game watch Zeroempires zero to hero series and learn some build orders. The real question is whether you just want to be able to beat the ai or whether you want to actually become good at the game.
