@SJ Dave Welcome to the forum!
I've got a few pieces of common-sense advice.
Firstly, get a shovel (preferably a small one), a full-size, matching spare wheel and tire, jumper cables, and a portable air compressor. The shovel, compressor, and jumpers aren't absolutely required immediately, but if you travel far or frequently, eventually you'll find somebody who wishes they had them... these are all reasonably cheap, and many companies make kits including most of these.
A recovery strap rated between 8k-15k pounds is nice to have, probably won't use this one too much, but for those odd days you end up needing it, having it is great.
Most importantly though, learn to use your vehicle safely and responsibly. Understand the physics of the tire composition and tread pattern, and the surfaces on which you will drive (soft/hard, wet/dry, cold/hot, asphalt/hard dirt/loose dirt/clay/gravel/rocks/sand/mud/snow/grass/leaves - each of these responds differently, so know what you're driving on, and learn how it works!)
Developing good judgment through practice and experience is the best way to learn your limits as a driver, and to learn the limits of your vehicle. Some of us get closer to those limits than others, and there is no shame in backing away from any thing you deem too risky. If you want to try it again some other time, you can always try it again some other time.
Besides that, learn what you actually like to do, and pack accordingly - if you like to camp, bring a tent; if you like to fish, bring some bait! If you take long-range trips, you'll almost certainly end up finding places to do things, so do a bit of research and find out what the locals are doing in order to decide which places you should plan to stop.