Lyman 50th is the best all rounder I reckon. It's largely brand agnostic.
The most important bit, if you don't have a mentor (and even then if they're just going to teach you their bad habits), is the first section which covers reloading methodology before you even get into the data.
As for the data, you can get it online for free. Collect and cross reference plenty of sources. I keep a bunch here.
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