JJ's right that experience is the best teacher, but might as well get as well versed as you can in the meantime (as long as you don't delay too long to do so).
Plus you can read a book in a few days or weeks.. A good real estate deal will (usually) take quite a bit longer. So while you're getting on the job experience, book learnin' isn't half bad, IMO.
Reviving an old thread...
I've finished John Schaub's book, and began the Galinelli book yesterday. Other suggestions on books I should read?
First, to answer your question most specifically, we'd need more information. There's real estate books for every topic under the sun. So what are you looking to do?
I'd recommend different books for someone wanting to landlord versus rehab versus wholesale versus focus on SFRs versus commercial versus mobile homes versus mobile home parks versus storage units, etc. etc. etc.
Figure out what niche you want to focus on, and then target some good books in that area.
That being said, here's a few recommendations of some more "generic" books from my bookshelf.
Investing in Real Estate by McLean & Eldred is a good general knowledge book.
2 Years to a Million in Real Estate by Martinez and The Weekend Millionaire's Secrets to Investing in Real Estate by Summey and Dawson are both okay books (both fairly generic advice, but good to reinforce the concepts to make sure your head is fully wrapped around them).
Although you're already reading it, I'll add (for others reading this list) that What Every Real Estate Investor Needs to Know About Cash Flow... And 36 Other Key Financial Measures by Gallinelli is a good book with lots of formulas if you're into the math part of deal analysis.
And finally The Unofficial Guide to Managing Rental Properties by M. Prandi is
great. Lots of gems in it. I actually had it in PDF and loved it so much I bought a copy for my bookshelf.
Many (all?) of those you should be able to find used (on Amazon, for example).
That should give you a few more to go with for now, and after that I have more as well. ;)