Welcome aboard, Hal! That's a nice rig to start with-got the winch which is a biggie for most M37 guys. Great pictures-always popular here! Depends on your needs but I'd start with fixing the brakes (assuming it runs) so you can move it under its own power. Get TM 9-8030 for addressing most maintenance adjustments such as valves, brakes, etc. Don't spend a bunch of money on the "M37 Restoration Guide" by David Ahl-while it has some good information within, it is by no means a "resto guide".
Some of our vendor friends also visit this forum regularly-John Bizal at Midwest Military will be your best friend once you start looking for parts. Vintage Power Wagons is also a solid M37 supplier, but higher in price. Check them both out on line.
Lastly, there are a thousand M37 "experts" (in varying degrees, right guys?

) on this forum who can answer most any question you might have. I'd also recommend using the search engine for info on differnt topics such as wiring, brakes, welding, etc. Most of your questions will have already been discussed at length by those of us who've been here a while.
Again, glad to have you with us! Where are you located?
Thanks,
Gary