P0441(TWICE), P0446(TWICE) and P0442

I just bought this 2004 Toyota Tacoma 4wd V-6 and it's coming up with these codes when I had it ran at autozone. They tell me it's Canister Purge Solenoid? Do you think this will solve the problem and make the light go off? The truck runs great other than the engine light, but I don't want to neglect it and make it worse. Any help would be appreciated. Also how hard is it to replace this devices if it is this part that needs replaced?

 

I am pulling the same codes. I'd imagine there is information out there already on these codes but hopefully someone will chime in with answers or a link pointing us in the right direction.