First Repair Questions

I bought a board for super cheap at a garage sale that has about 6 spots that need repair. I would think they would need at least a layer of fiberglass cloth, resin, and hot coat. Only problem is I don't know where to buy the supplies to fix it. It also has what looks like spider cracks on the some of the top and bottom of the board that only a few catch my fingernail. How would I go about fixing them? I was going to have a professional fix it up but because I got it for pretty much free I figured it would be a great learning board. I attached some photos of the spider cracks I'm talking about.