Ok, I'll give you a few of the most commonly recommended starting points for a few areas of magic. Any of these will set you up with more than what you need.
General Magic:
Harlan Tarbell's Tarbell Course in Magic
Mark Wilson's Complete Course in Magic
Joshua Jay's Magic: The Complete Course
Henry Hay's The Amateur Magician's Handbook
Card Magic:
Hugard & Braue's Royal Road to Card Magic
Roberto Giobbi's Card College
Coin Magic:
Bobo's Modern Coin Magic
Mentalism:
Bob Cassidy's Fundamentals
Tony Corinda's 13 Steps to Mentalism
Annemann's (kind of) Practical Mental Effects (AKA Practical Mental Magic)
(If you want more details on specific areas of mentalism, eg. Cold Reading, Suggestion, etc., or go into these in more detail, PM me, but these are the basics)
Flourishing:
De'vo's Xtreme Beginners 1 & 2
Jerry Cestkowski's The Encyclopedia of Playing Card Flourishes
Rope Magic:
Richard Sanders' Fibre Optics Extended
I'm sure there are more, but these ones are the best of the best to start out with, and the best for beginners. There are several good products to go from there, but this is where you should start. I would like to stress that this is not the only way, but it's probably the most suggested way by professionals, and the most proven way.