That's too broad a question to answer effectively on the web. In fact, it takes a book!
There are several books available and I have most of them. I think the best, most concise is the "Precision Shooting Reloading Guide", and it's not very expensive. I think Sinclair and MidwayUSA both sell it, so do some local dealers. I got mine from Sportsman's Warehouse in Columbia, SC.
Glen Zediker's book, "Handloading for Competition" is good but quite "wordy", you will need a fine sieve to sift out the info from all the words. And it's expensive.