Starts sometimes and sometimes it doesn't. When you turn it over it just clicks sometimes other times it starts perfectly. Checked battery and it is good. Any ideas? (starter, starter relay, battery terminals, ect.)

 

I'd begin with cleaning & tightening the battery terminals. And the other end of all the cables. That crusty green crud can sneak up on you. Disconnect (-) so you don't short to ground with a wrench.

Then if that doesn't help...
When it does NOT start, have someone hold the key at the START position while you hit the starter with a broomstick. If that makes it start, then you need a new starter. Or rebuild it by putting new brushes in & new contacts in the starter solenoid.