alllllright so i recently just got this problem among others i just got but my engine is dying out alot after like 10-20 of sitting with all power off to the car, when i go to start the car it doesnt bother to start and makes 1 click each time I try to turn the ignition. I am assuming its my starter solenoid, is this an easy/cheap thing to fix and where can a find a starter solenoid is it something i can go pickup for a local shop like autozone or shucks, ive look and tried to find on the website but their [crud] is crap. if you could help me out this would be great thanks!

CAR:
1989 honda CRX DX
Manual Trans.

Other Recent Problems:
Cata Converter just went out and are causing alot of issues, hopelly this has nothing to do with what happend above , which i am kinda doubting, maybe its this crappy seattle weather.