Zach,
IF you are going to take a 20 year old truck out to play, you are going to break stuff. IT can get real expensive real quick if you have to take it to a professional mechanic for anything that breaks. He not only has to pay to put food on his table, but also his phone, insurance, rent or mortgage on his shop, utilites, advertising... on and on. It is expensive to run a business!
If you don't already have some tools, for a hundred bucks you can get a nice little set of craftsman sockets, and some wrenches, and you will be off to a good start. Depending upon the issue you may save that much each time you use them. As you tackle a project that requires additional tools, go get them, and add them to your collection. Whatever they cost, you will probably save that much in labor charges to the mechanic. There are exceptions to that rule of course.
See if you can hook up with someone who can give you a little coaching, a neighbor, the high school auto shop teacher, or a wrench turning buddy, who can point stuff out to you. We can help you here, if you can post pictures. I was fortunate enough to have my dad to look over my shoulder and give me advice. No doubt it is important for one to know his limitations, there were certainly times when I took shit apart, and either couldn't figure it out, or realized the reapir was beyond my abilities, only to put it back to gether and pay for it to be done. But in taking it apart... I got additional knowledge and experience.
joe