Please, go visit the main forum. Read the rules.

Then more importantly read the posts, there's gold in them there threads!.

Use the search function, i.e. search "how to make a paypal button and link it to my sales page", "what's the best free membership site program to use", "how do I secure my download links", etc.

Take the time to read the posts. Then read the rules again.
I agree, you need help, so go to the main forum, and be prepared to know, that it's not going to happen overnight.