Without slowing down and reading carefully, I get lost following what you have. fortunately, there is little pain with misreading. But, for loading, there are real penalties from error. so I stongly suggest you pick ONE chambering to work with, and only one, for a few months. Go thru a few different bullets, and powders and making a minimal amount of changes at a time. That way you will be able to monitor the impact of your trials and get a feel for what works better or less. Get a chronograph, it adds some fun to your load iterations. You can see the impact of each progression of powder load.
Also, get some tools to accurately measure you brass. I too like the book "ABCs of reloading", run to the library and look check out every book on reloading they have. i was able to order those that were not on my local shelf. My enjoyment from the hobby comes from the mini science project I make out of it. Thats more interesting than just running the brass thru the press, using someones favorite load data, and smashing a bullet in to the cannelure and calling it a day.