Its hard for someone else to tell you what your time to learn something should be. Some people need a bit more time, some a little less. Its all really a personal journey. Many traditions ask that you dedicate your studies for a year and just study and learn.
hi first of all you should check out the tips on this site http://www.spellsofmagic.com/tips.html
and u should also check out the articles on the site.In the articles tab there is a lot of information on different types of magic,how to cast spells,holidays,herbs,tools etc.
After reading through some of the articles u can decide on what suits u best and look for a teacher or coven that can guide u on the path that u choose.