What sorts of night temperatures are you thinking? Are you close to an outdoor store like REI to see things in person? Do you need the ultimate now or some basics and upgrade when you learn more?

I tend to be a tent+pad+sleeping bag person since that gives me a lot of flexibility.

For tents: weight, size as well as protection from elements, bugs and condensation matter. Tarps are a light weight option for some. Easiest thing is to see some tents since folks are different on amount of space that feels comfortable/claustrophobic. I personally have two person tent I can sit up in, bring in my gear and protection against worst of the bugs but you may be fine with something more minimal.

Sleeping bags are rated to lowest temperatures. Weight is trade-off here as well as if it retains heat after getting wet. Get enough for you conditions but not too much more bulky/heavy.

Sleeping pads provide insulation and comfort. They can be full length or shorter. Quite useful.

Visiting an outdoor store will show some of the products.

It is possible to get some items on the cheap first e.g. tube tent, basic bag and pad. Potentially also to borrow some items. May not be the ultimate yet, but enough to get you by and then upgrade selected items as you get experience and learn your preferences.