License Study Resources
You must be licensed by the FCC before transmitting on amateur radio frequencies. If you can't find a class, you can prepare for the test online and with books.
The question pool and correct answers are publicly available. You can take practice tests online. You'd be surprised at how many questions you can answer correctly merely by eliminating the obviously wrong choices. Then just study the areas you are weakest on. Go back and take another test and repeat till you feel ready to find a testing session and take the test.
Here are some useful links:
The Technician question pool (correct answer in parentheses)
And when you are ready, here's how to find a test session: