Where are you located? It is best to get an attorney near you. I am in Massachusetts.

Whether you are infringing depends on how the patent claims are drafted. That I cannot tell you because I can't give legal advice.

If you want to learn for yourself before going to a patent attorney, pick up a law school textbook and start reading. The law isn't hard. You just need to understand how the courts have interpreted the Patent Act.

I used this one in law school (used copy will be fine): http://www.amazon.com/Intellectual-Property-Trademark-Copyri...

Get the supplement, too (supplement gives you the recent updates to the law): http://www.amazon.com/Intellectual-Property-Materials-Supple...