Mambo or Joomla!

Can somebody tell me what the difference is between Mambo and Joomla! ?

Is Joomla! the newest version of Mambo? Is it better than Mambo?

I'm trying to figure out if I should learn Mambo or Joomla!......I will learn one of them....

Also, if you can point me towards any good Mambo/Joomla! books, I would appreciate it.....I've already found the online Mambo documentation, which I assume applies for Joomla! as well?? I'm confused - can you tell :rolleyes:

Anyway, I appreciate any help you can provide here....

http://news.com.com/Open-source+split+of+Mambo+software+begins/2100-7344_3-5846006.html

he disgruntled developers behind Mambo, an open-source software for publishing Web sites, have launched their own version of the project, called Joomla.

Version 1.0 of Joomla is based on version 4.5.2.3 of Mambo plus some security and bug fixes. Like Mambo, it's governed by the General Public License, or GPL, which lets anyone see, modify and redistribute the code. The developers announced Joomla Thursday and said the code itself would be available "very soon."

In August, Mambo developers split with Miro International, the company that founded and commercialized the project, over disagreements about how to govern the software and control its intellectual property. Miro established the Mambo Foundation for the task, but the developers argued that Miro still held the real control.

For its part, Miro said the developers were the ones making the power grab and vowed to build a new development team from scratch.

That answers many questions, but one remains: Does it make more sense to learn Mambo or Joomla! ? I know Joomla! is in its infant stage, but for someone that wants to learn this stuff, which is and will be the better one to start with? Or does it not matter? Just curious...