Just help me out here, ok? In the land of 2015, I can go to each powder manufacture's site and download his information so why do we keep recommending a book case of loading manuals? I fell into this "trap" years ago, but now, with so much information at my fingertips due to Al Gore inventing the internet, do I need a bookcase full of books that cost several dollars each or just spend the money for bullets, power and primers?
Honestly, I think it's habit.
The books have two uses - reloading info and reloading data.
Hornady 9th was published 2012 and has a good front section. Hornady makes lots of bullets = lots of data

My go to manual.
If you use Sierra bullets like I do, I'd get that one as well.
Maybe two is overkill for info, but that would give you two looks/reads at reloading info to add to press manufacturers and others who have videos on line. Plus at least one fairly comprehensive line of clad bullets, if not two.
From there . . . Lee has a great front section if you are using Lee equipment. Otherwise it's not as useful as anyone else's. There's no original reloading data in it - it's a compilation of everyone else's data published at some point in time
Lyman 49th was first published 7 years ago, despite the fact that the Lyman web site calls it "hot off the presses" lol. The front section is good - I've never used it for data.
ABCs of Reloading is a nice book of nostalgia though it was last "updated" in 2010. Reading it will bring you back to the 60s

OTOH, it covers some topics not covered in other books . . . if you have the patience to read that far.
All the powder manufacturers have data on line. Some may not know that Hodgdon distributes IMR and Winchester in addition to Hodgdon stuff.
The bullet and powder manufacturer's have phone numbers and they take calls and answer questions.
So it's hard for me to recommend more than the Hornady book and perhaps either Sierra or Speer if you use their bullets - or perhaps Lyman lead if you are into boolits.
If you find you have a need for more info, you can always say "Hey, Twoboxer, you were full of ****!" and go buy another manual at that time. Otherwise, buy components
