So you're saying to yourself, "Sweet, SP2013 has released! Now how the heck do I learn what's in such a massive product?". Fortunately Microsoft has your covered. For each of our products we have a program called Ignite. Ignite's purpose is to get as much learning material in front of customers and partners as fast as possible. The content is delivered virtually and in the classroom, in limited locations. The materials consist of PowerPoint decks and video presentations. We typically release a 2 Ignite tracks for SharePoint. Those are "IT Pro" and "Developer". Now you're saying, "Ron, this is great news, but give me the links already!". So here they are.
SP2013 IT Pro Home - http://technet.microsoft.com/en-us/sharepoint/fp142366
Ignite Content - http://technet.microsoft.com/en-us/sharepoint/fp123606
SP2013 Developer Home - http://msdn.microsoft.com/en-us/sharepoint/
Ignite Content - http://msdn.microsoft.com/en-US/sharepoint/fp123633