I wanna learn to buy property then sell when market is high and earn huge profit. is there a nice website EXPLAINING EVERYTHING?

o I think I didnt add enough detail before. So here it goes: I just got a call from someone I know that decided to invest in a bunch of foreclosures with a bunch of friends (so he says). He has various listings. Anyhow, here is the thing. he called and said they are selling the properties and would put down the 20% downpayment PLUS he would give me an extra 20K? What do you think is the catch? He says he is just trying to sell the properties as fast as they can since they are making payments on them every month. heehee… it woud be funny if he saw this on ASK. Sorry buddy! Just trying to figure you out. I know theres gotta be a catch. What kinds of questions should I ask him? I am really looking for someone who can offer real advice and give me a few good questions I should be asking him and myself and what to look out for.

so that u can re-invest it in other property or do u have to report it that year? thanks