yes Nicky, welcome to the shop! I'm with the " skip the generic books for wealthy hobbyists" crowd - you can learn about general restoration info right here
"to cover the many basics of restoring these trucks" you'll need to learn: old time auto mechanics [no computers or sensors

], body work, paint, vintage auto electrical, upholstery, and a bit of woodworking .... find a truck that looks solid [little rust], buy it for what it's worth to ya, dive in, and get the appropriate shop and assembly manuals when you understand their usefulness
when ya hit a wall and can't figger somethin out, come on back and ask .....
I heartily approve yer choice and there's a number of us here that'll help you along
Bill