Yeah. Thats my biggest void in knowledge. I know almost nothing about the mechanics. I would be one of those people with all the tools and not know what to do with them. Any help or resources there would be great.
Learning the mechanical side of things is a long and arguably non-ending process, but you can get started with small steps that will have a lot of value on the trail.
1) Practice swapping a tire for your spare using the factory jack. You might want to pick up a cheap 1/2" Torque Wrench from Harbor Freight ($10) so you can put the lug nuts back on to the proper torque (check the owner's manual). You might also want to carry a scrap of wood in your truck to put under the jack on loose surfaces like dirt.
2) Start to learn the critical suspension and driveline components of your truck, this way you can inspect them after the end of a trail run to make sure nothing is broken or leaking. It's not critical to know how to remove or repair them, I'm just suggesting getting familiar with how they normally look. Some items to look up online are: upper and lower ball joints, tie rod ends, steering rack boots, inner and outer CV boots, front shocks, rear shocks, rear leaf springs, and front and rear driveshafts.
The CB vs FRS debate is a tricky one, and I think it comes down to who you wheel with. Personally I have a CB in both trucks and I never use them, every group I've gone with uses FRS/GMRS radios. I'm currently getting my HAM license to allow for more transmitting range.