the A+ has just revamped itself (they do every 3 years) from 220-701/702 to 220-801/802
there is not much out for study material and the mock exams have not been released by CompTIA for 220-801/802
i would recommend heading over to
http://www.certforums.com/ <-great forums lots of helpful members who are doing the same or have done as you
http://www.professormesser.com/ <- lots of great free videos on CompTIA courses the 220-701/702 for example has over 20 hours to watch covering everything pretty much , 220-801/802 only has near 2 hours atmo
like others have said try pick up a book mike meyers comes highly recommended