The process, same book just different system.

1. You fill the form 
2. We upload your book 
3. We give you the account to edit it 
4. You sell the book 
5. You pay us only after selling it for free (incase you are worried students will not buy)
6. You give us the soft copy 
7. We upload a secure version of it
8. Note-1: it can not be copied, shared or printed 
9. Note-2: it also has an expiry date 
10. Note-3: Students need a password to access it which you sell to them
11. Note-4 Just like a normal book

The difference is one you sell printed copy, this one you sell code.