A+ is a good ground floor fundamental certification to have in the IT field. While it can really amount to little on it's own, it's most important contribution is it prepares you for the mind set to move upward in the IT career field if you are new to computers. I never studied at all for it. If you get it, you can easily get a job as a hardware installer technician and then use the company's paid training to learn other stuff.
I have A+, MCSE (didn't study for it either), MSDBA (didn't study for it either) and OCP (studied my ass off - it is BRUTAL!!)
From A+ I would suggest moving to UNIX admin and then on to NT Admin. From there you can decide if you like networking, programming, web design, or whatever.