Firstly, you need information: Check www.myveganjournal.com Look for Bizzaro.com Go to youknowyouareveganwhen.tumblr.com Look at the internet. It is infinitely full of information
Once you are informed, you have to be aware of what you need. You can get all of the nutrients you need through a vegan diet. Again, if you have any doubts, google it, do the research.
Get together with other vegan people to share information, recipes and everything you need
Remember, being vegan means NO to animal products, and YES to happiness for you and the planet.
The vegan cheklist: Did the animal give it willingly Does it harm the animal Does the animal need it to survive or be happy (If the answer is yes, even parcially, to any of these, it is NOT vegan)