How do you intend to take the A+ exams? There are many programs that will provide you free training and practice tests as part of the program. They might be able to provide testing vouchers that will let you take the exams more than once.
If you are doing it independently...For myself I prefer reading, and will pick up some Mike Myer's books and read them front to back. Write down anything you aren't familiar with, and anything you think you are familiar with, study some more.
The first several Comptia A+ certifications are basically just memorization. They also don't equate to much these days. How deep are you planning to go? Some of the stuff gets expensive, but is the equivalent to associates degrees or even bachelors degrees.