Chevrolet: starter on 1 1990 corsica, selenoid, meeter

Question
i haad a rebuilt starter put in a while ago. Everything worked well/ Then my battery went dead, so I bought a new one and after installing the battery , the car would not start. I boosted it but all I get is a clicking sound and I think maybe its the selenoid switch . Is that hard to replace.  I can't do this myself , but I don't want to ripped off either . Can you help me ?
eddie  

Answer
Eddie;
I wonder if the battery is dead, did they put a charge on it prior to givin it to you ?  I would get a set of jumpers, see if it starts if it does, let it run for 10-15 min than go for a 15 min drive and if you can put a volt meeter on it when running cause if you are putting out under 13+  thats bad. also check the battery term. ends they must be clean and the one on the starter and the one on the bloac they all must be clean or the circut will not be complete. ok p.s. is is in the right way right red to pos+...>>