It depends on what exactly you're trying to do. Naturally, you get what you pay for -- so free stuff is usually pretty limited.
http://Muvipix.com has a large number of free, basic tutorials. A subscription to the site gets you more advanced. To see some of what's available, just go to the home page and type Premiere Elements in the product search box. They've also got a Community Forum where most basic how-tos can be asked and answered for free.
There are also some tutorials on YouTube.
I've also got both basic and advanced books available. Here are the books that cover all the tools in the program.
And here's my book on creating advanced special effects.
There are also the Inspiration Browser tutorials (some only available to Plus members) and Adobe TV - http://tv.adobe.com/product/premiere-express/
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