Need HELP! PLEASE!

Hello my name Cecil. I have a new GRBL control board and I am having trouble getting the settings and limit switches to work properly and get it to home position. Basically I need advice from a knowledgeable person who is familiar with setting up a new board. I have not been able to perform any functions with my laser I am an extremely desperate man not to mention frustrated. Please any help, tip, advice and suggestions would be greatly appreciated.