Hey Defiant,
I have long recommended the Lyman manual as the "First" reloading manual a new reloader should buy. It has a vast wealth of information about the mechanics of reloading, and it also has a great wealth of reloading data. This has been true of the Lyman manual as far back as the 1950s which is the oldest edition I have. "ABCs" is also a good manual, and I have a lot of editions of it, but Lyman is the Grand Daddy of all the existing manuals and still the best "First" manual to buy.
Lyman also makes a few other manuals that are what I consider "First" manuals in a particular application:
Shotshell Loading - The Lyman manual is solid with its combination of textbook loading mechanics as well as loading data.
Cast Bullet Reloading - I can say the same words for this manual as what I said for Shotshell Loading. This one is also the Grand Daddy of cast bullet reloading manuals.
There are other manuals that are also very good, and I own and use several of them including, Hornady, Speer, and Sierra. To me, however, Lyman is the best "First" manual to get.
Best wishes,
Dave Wile