Hey Pablo,
Welcome to the wonderful world of J2ME!
I'm fairly new to it as well, but am loving everything about it... There is a lot to learn, and if you're really into the subject, you'll find that you want to learn everything!
My suggestion for a book would be to pick up John Muchow's
Core J2ME book to start off with. I find it to be a fairly easy read.
I've heard other mentioning Jonathan Knudsen's book,
Wireless Java: Developing with J2ME, Second Edition, and it's my next purchase... I just need to wait for my local bookstore to bring it in.
One of the best resources I've found so far is Sun's own Java site (
http://wireless.java.sun.com). It's full of articles and tutorials that will get you on your way.
Also, don't hesitate to post your problems here... The people are very helpful, and are always willing to lend a hand!
Hope that helps...
Frank
[ July 09, 2003: Message edited by: Frank Manno ]