Yes, a domain name and a web name are the same thing. I use godaddy.com all the time for my website clients - they are reasonably priced and provide the exact same services as the more expensive ones. You just have to be careful you don't sign up for more than you really want because they offer you multiple things at checkout.

There is no hard and fast rule for name length, but you want it easy to remember and easy to spell. And, yes, the shorter the better. The longer it is, the more opportunity for people to mess up when they type it.

How about YOUR name, is that available? And did you try the name you want with a dash between words? What is the book title, subject, etc, and I can help with suggestions.

let me know...
Kathy