If there is one tool that you should buy first for restoring a vehicle, it’s a repair manual. Here are two examples from Amazon:
These manuals will tell you how to accomplish every normal maintenance job and many less-common jobs on your vehicle. I know that most things you need to do you can learn how to do on the internet, but it’s very handy to have a manual that you can grab and take to your vehicle with you. And often the manuals are better written than most internet guides, if there are even any guides out there for your vehicle if it’s rare.