There are basically 4 reasons to ground your station and grounding for each one is slightly different. There is grounding for 1. AC protection, 2. lightning protection, 3. RF grounding, and 4. antenna grounding (to create the other 1/2 of the antenna such as a vertical). The best thing is to go to American Radio Relay League | ARRL - The national association for AMATEUR RADIO
select 'websearch' and type in "station grounding". The site will list information on how to do each of the above types of grounding. Best of luck.