Nota Bene: I know just very little about real estate, and all at second hand. But perhaps this is helpful.
1. Go here for a solid little book for the beginner:
http://www.amazon.com/exec/obidos/tg/detail/-/0071396497/ I've looked through it and it looks like a good primer.
2. Realize that lots of folks think we are in the midst of a real estate bubble, so don't assume that you can just buy a property and sell it for 30% more 6 month later just forever. Real estate bubbles can take a while to crash sometimes, but they can do so.
3. Think about what you want to do. Do you want to be a Realtor, helping individual sellers and buyers? Do you want to buy up properties, fix them up and resell them? Do you want to be a landlord--of small units, of large ones, of what? There are a variety of options here.
4. Related to 3. If you're not rich to begin with, then how would you start achieving 3? If you're a really good salesperson, then you might be able to start working for a realty firm, make lots of sales, and then do that until you're confident and rich enough to start you're own shop. If you're going for the resale/fix up route, then really know your are and just what this would entail (for that is a speculative venture.) If you are looking to be a landlord, then consider how you can start small, ACQUIRE SOLID, RELIABLE REVENUE STREAMS (one more time ACQUIRE SOLID, RELIABLE REVENUE STREAMS), and build from there. You don't want to start out speculating in 2 million dollar lots, have a garbage dump open up nearby, and lose your shirt (blouse?). If you've got 1-4 small units being rented out by normal people, that are essentially paying themselves off, while giving you a bit extra past the mortgage, then you can continue your regular job while having a simultaneous increase in both wealth and income.
5. Do you know the area you want to work in? Very important for an individual developer/potential landlord, but also quite useful for a realtor.
Anyway, just really think this through. It can be done. Just really use your brain in understanding how it can work out for you.