Very useful tips for learning the game. But I am afraid that poor jedigeiss will have a very hard time to compete. :p
"Booming" sounds wrong. Maybe "economic advantage" or "strong economy" would be more fitting? Don't tell me that is the slang for the game :D
Nice information about the different factions. I never played much AoE2 because I never had the money to buy it after it came out. So I appreciate it.

If you record a replay you should probably configure your recording software to ignore the cursor or keep it near the screen edge until you need it.