Thanks to everyone for your advises! I'm really appreciate it.
For now i decide to invest in few projects and check out for next days for how it works. Let's see.
Later i will post some information about my choice
Cool man! Don't invest much at once, choose 1-2 projects and be patient, watch how it goes and if you will feel ok than invest more. Don't expect x10, that times gone already, for now better is small profit than loosing everything. Good luck! And let us know your decision please

I think to invest some money now also because I did find interesting project for me in this topic. Let's see!