The Vicidial Manager's Manual is available at EFLO.net. (Free version as well as paid ...).
I HIGHLY (there are witnesses to this!) recommend using it as a step-by-step workbook to configure the system. Start at page ONE, do NOT skip anything. If you are sure you do not need "this particular section" DO IT ANYWAY! LOL. Do not stop until you hit the back cover or Everything Works as you Like.
Everything you "NEED" is available in the Free section. I can tell you from experience that the PAID version will give you enough extra information to pay for itself many times over. On your first call to someone like PoundTeam for support we will recommend that again (since many of the services we provide are COVERED in the paid manual ...), but after that first time if you haven't bothered, we're happy to take your money.

My advice is usually "when you get your first check from ... whoever pays your call center ..., purchase the paid version of the manual that day, as this will hopefully be a long and profitable ride: The Manager's Manual can make the ride Much Smoother and MORE Profitable.