[Kidkraz]

Welcome to the forum. Several things come to mind. Will you be getting the owners manual with you TM? If one is not provided, you can download a copy on the forum, in the tech library section.
What is you tow vehicle? Does it have tow mirrors? If not, there are options, use the search tool. Type in tow mirrors and several posts should pop up for you to read on.
Tools, the square bits, I want to say Robertson? Don't quote me here, but you can find them at any hardware store. I have a tool bag, with spare fuses, short runs of wire, splices....the normal stuff.
I also went over the trailer and took pictures of most everything. Appliance tags, axle tags...how the battery is wired. Knowing what model/ with serial number of appliance makes finding parts easier, especially if your on a trip.
Bottom line, this forum will help when you need it. And again welcome to the forum and the Trailmanor.