I agree with Lost Sheep on the Load Books, you get the advantage of several different manufacturer's data in a single place. The Lyman 49th Manual is good and the Speer 14 has a lot of techincal info.
The ABC's of Reloading gets a lot of mention around here, and at 16 bucks paperback on Amazon, $13 Kindle, it is worth the time it takes to read it.
You may find over time that you or your machine "like" certain brand cases better than others. But as others mentioned, technically they are all so similar it is not worth worrying about.