Yep, you got the important stuff

They also have number of bells and whistles like:

1. paying flat fee for unlmited calls US and Canada
2. buying a landline number that you then give to friends to dial in case they don't have skype and/or computer; you essentially are paying for a 800 number for them to call you
3. call forwarding to your mobile, etc.
4.
5.

But essentially what you wrote will get you started...

Btw, they do have community (forum) for more details.