Computer jobs

I know a lot about computers... I can build them from scratch, troubleshoot and fix both hardware and software problems, set up networks, etc. ect. ... but I have no certifications. Ultimately, my goal is to own or manage a computer building & repair shop, which like makes housecalls to set up networks and stuff.

My sister's apartment complex has a free Cisco school for residents. So I plan to get an apartment there, get CCNA certification, use that to get a job, and then (while getting other Cisco certifications) save up to get A+ certification.

Does this sound like a good plan, and what jobs can I get with CCNA certification?

You don't need a certification to assemble PCs. Certifications are for idiotic managers, get some if you want to get hired by them. BTW, CCNA means nothing; I've heard so many horror stories of CCNA people confusing TCP and UDP or misunderstanding subnet masks.