Accounts

Hello
I am new to the program and do not understand a thing that should be very simple.

Why buy in the store for Accounts if you can generate free through your program?

It differs purchased an Accounts Accounts that create a tool through?

And
The second most important question:
I have in my account for 3 habiertos projects, but I can not in any way that I published in my accounts. I get always dossier, and not that I'm doing wrong.

I said to submission 1, but do not really know where it is.