I too am relatively new to reloading and I can't stop! I've become addicted to it.
First thing you get used to is that there are 144 different powders!! DO WE REALLY NEED THAT MANY?! Find a powder burn rate list and familiarize yourself with some of the powders in your load data. If the load data has an astericsk by it, that is a load they feel had the best accuracy and results (with their gun and equipment).
So you try and weed out 140 of them . . . and go with 3 or 4 powders . . . just cause you can.
One rule of thumb I found interesting and helpful . . . "The heavier the bullet . . . the slower the powder". For all calibers.
Try this . . . pick one of your calibers, open all the load data you can find (books & on-line) . . .and cross reference which powders are used the most. It's helpful it whittling down the options and helps familiarize you with some of the language.
Then start working up a load . . . that's a whole other ballgame once you narrow down the powder choices.
Maybe it should go without saying, but set up your gear in a dedicated area where you don't get disturbed or distracted. And double check yourself through every step.
One screw up and "you could put an eye out"!!