Help-Setting up a trailer for Racing

So I did a search here and didn't find a thread on the subject so I'll do it,This will be Zach (my son) and mine first summer heading to the track,So I need some help with the trailer set-up,So basic tools I should have,Extra parts that should go along and stay in the trailer,I don't see myself pulling apart a rear end in a parking lot or pulling a trany like I have seen at events but none the less I want to be prepared.Not looking to get beat up by anyone so If you can't help please keep your comments to yourself,This could help a lot of members here at the same time and maybe become something people reference in the future-Thanks Steve