Best advise is as always, 'Read and learn first'.
Read the stickies (above), get a couple or more reloading books and know what you want to do before you start spending cash. Loading is not a race. Take your time in each step, safety first.
With the above understood. I load each of the rounds you have listed and have not found any great secret or qurk in the loading of them. I would advise to begin with just one, only one and learn the process in full. I would also opt to start with one of the pistol rounds first. (reason - straight wall case, usually sized with a carbide die/no or limited lubrication needed, very seldom will primers be crimped in, a bit more forgiving). Both the 44 and 45 are good choices (I would start with the 44 if it were me).
To formulate your load/s. Use well respected sources and compare several for consistency. Internet listing from un-proven sources should be used only as reference points and not taken as being true. The listed 'Starting' loads are just that, a place to start. The listed 'Max Loads' are not a challenge, so until you have greater experience (and a chronograph), don't push it. More often than not the best accuracy is NOT at a max load.
Pick you components from what is the main stream standards. Why? They have been tried, fully tested and found suitable and safe. Save the ultra X factor experimenting until you have mastered the basics. This gos for rifle loading the same.
When loading for 'auto-loaders', the additional aspect of action function comes into play. Just one more of the enjoyments.
Read, think, ask questions and if you can find a mentor.
Always error on the side of safety.