A on-line manual (or book) is no subsitute for a live teacher. Although, things have come a long way, you can even take online lessons now. Give
http://www.musicdojo.com a try. They have a free class for beginners, so you can get a feel for the service. I've taken a number of their classes, and I highly recommend them. No worries, I'm not on their payroll or anything, I just liked the classes and interaction with top quality instructors.