As a Newb to Reloading.
I found the Lyman to be the best all purpose manual, its layout well, easy to follow, covers the reloading basics and has a decent amount of reloading data.
I purchased the Holy Grail "The ABC of Reloading” It’s a compilation of older articles. Yes the information is helpful and still relevant, but the same information can be found from the manuals like Lyman, Hornady, Speer, Sierra and Lee.
I use the Speer, Sierra and Hornady manuals the most reloading data. Which one I use is dictated by the caliber and the components that I'm are using. No one manual has it all, especially if your are loading multiple calibers.
If you are looking for additional data don't look for in "the One Load One Books", and "Gun Guides reloading Guide for Pistols". They are a waste of money, all they do is regurgitate the free information from the powder companies and the reloading data you already have in your reloading manuals.
Buy several reloading manuals. Take avantage for the powder company sites.
Check out the equipment sites. Search You Tube. Subcribe to Handloader's Magazine
Have fun, be Safe!
just my cents, what do I know I'm just a newb.