Is this the correct book for small blocks?

Good reference book. Some of the stuff in those books about blocks, wall thickness etc in them is folly.

It will definitely have good info about processes and approaches. Some of the info may be outdated by better things done today.

Building a 300hp 360 is easy and can run like your grandmas ol 318 at idle. An all stock 360, even the low compression models, 4 barrel intake with a XE262-268 or lunati voodoo 401-402 cam will get there no issue. .460-.480 lift cam should do the trick.