If you are learning how to weld as you go, delay working on your Jeep for a while. Practice on something that doesn't matter if you screw up. Get some beat up panels from any car from a junkyard and some thicker scrap steel if you intend to weld thick steel to thin sheet steel. With old panels you will have to clean them in the areas you want to weld and you will experience paint burn.
Buy some good safety equipment. Proper welding gauntlets, even cheap ones stop you burning your hands and let you achieve more control by getting closer to the workpiece.
I have a cheap suede welding jacket now but I have had plenty of blobs of hot metal burn through clothing into my skin in the past. A second hand leather jacket that is not fit to be seen in is a good alternative.
An auto darkening mask is essential if you don't want to be blind in your later years.
I have various battery powered magnetic LED lamps and some old desk lamps for workpiece illumination that I struggled without for a long time before trying it.
Stuff that you don't want to burn will burn quicker than you think. Have a fire extinguisher ready.
If you can find someone experienced in welding that can teach you how, go for it.
I am not a professional welder, but I had proper training when I was an apprentice. I don't weld often and it takes me half an hour of practice welding on scrap to get all my settings and technique perfect before I start welding on my Jeep.