First time dirtbike owner must haves

Just ordered myself a brand new ttr110, I’ve wanted to buy a pit bike for a while and thought now would be a good time. I’ve never owned any sort of dirtbike or motorbike before and was just wondering the exact must haves I should get, I know you need a helmet and other gear but is there anything I should be getting for the bike, like things I would need for the maintenance and other stuff?

I’m also about 5’7-5’8 and weigh 57-60kg, I’m aware this is big for a bike this size so what is also some mods that I can add to this bike in the future for a more comfortable ride?

I only really plan on using this once, maybe twice a week and only for trail rides on the dirt hill behind my house, not any heavy jumps.

All help would be greatly appreciated thank you.