
Your Border Collie will need trimming for the show ring. I wouldn't worry too much for his first show as he is only six months. The long hair on his hocks will need cutting back with thinning scissors, his feet will also need trimming. The ears should only need the dead hair plucking from the base. If they are tipped you may need to trim the edges of the tipped bit, some need it some don't.
You really need someone to show you how to do it correctly. Don't try and do it yourself. Does his breeder show, she would be a good person to ask. Failing that the Richmond Champ show you are going to will have a lot of experienced people there. If you get there early you should be able to find someone there to help you. They will all have scissors with them.
Don't worry about the lead and collar at this stage, at Richmond have a look at what others are using, it is usually a fine leather lead with a nylon or leather half check.
Good luck and enjoy.