The Hodgdon/Barnes/Accurate/IMR websites. (free too)
If you are a "newbie" to reloading, the Lee and Hornady books are excellent at covering the whole process. All bullet makers offer excellent books as well.
these as well as 4 reload manuals are in my collection and I am always looking for one I don't have. Yes I use all of them and currently use at least 1 load from each of them.
Not all reloading books will publish the same loads and some will have different starting loads and max loads. In reloading it is all trial and error. find what works for you.