http://www.lendacademy.com/p2p-lending-investor-resources/
To read up on investing in Lending Club.

https://www.lendingclub.com/lenderg/createaccount

You can put as much into any loan as is still needed. When you sign up they will ask if you have a large number net worth and other things like that, if you don't you can just say yes - they won't check.