I've been on/off studying for my A+ for the last three years or so, got a little messed up when they changed the whole thing last year and have now thrown in performance based questions. Got my first of the exams in January, but I still can't help but feel that some of the questions will be pointless when it comes to the workplace; anyone needed to look up IRQ codes recently? I've never had to in the three years I've been a tech!
I thought they would have weened out stuff like IRQ assignments with the new A+ in 2010(I think). I did the version before that. There are other CompTIA certs, I also did Network+, I think there is Server+, Linux+ and others. Maybe something like Linux would be a better idea as I would imagine it's a more specialised field.
An A+ could get you a job as a 'PC Engineer' for non enterprise levels, i.e home user level, setting up home networks, removing viruses and the like.