Organization is very important in reloading. You will have casings in various stages of preparation. Label every container with what stage it is in.
I bought a painters book (hard cover notebook without lines) and every load i made, i put all the load data on a page, and then when the load was shot, i put a cut out of the target in the book. No sense forgetting what has been tried and didn't work, or tried and did work. Targets of course have the info like, gun, yardage, group qty, and group size. Production loads highlighted in the book which helps for quick digging (Bookmarks).
Load Workup Stickers are worth it when starting. They will have: Bullet, Powder, Grains, Trim Length, Overall length, primer, load data origin.
I bought a bunch of cheap ammo boxes and label them with the same sticker that goes into the load book. You may have 20-40 loads to shoot and that's a lot of ammo boxes, or ammo to keep separated.
Heed all the safety warnings. Reloading is an at you own risk game.
I'll give you an example of a quick learn i had. I purchased some Small rifle primers in august. One of them was Remington 6-1/2. I wanted 7-1/2 but they didn't have any, so i got the 6-1/2. Figured i'd look into them later...I didn't have any load data calling for the 6-1/2 but i figured it was a small rifle primer - so why not! Well, i did some digging, and learned these were not suitable for the round i was shooting, despite being labeled as a small rifle primer. Was it a safety risk if i used them, not so much, but would and can cause wear on your firing pin and bolt face. So the moral is that you are responsible for your own homework and it is truly an at your own risk activity.
When i first selected a powder, i compared every load data source available for my primary bullet, and each load source usually highlights a "best". I found a powder that was listed as best on at least one load data source, but also found on other sources too. Look at the range of powders to see where it sits in burn rate. Look at the close relatives, and compare load data of the other powders and your select bullet also. Some cases you cannot find load data for the powder, bullet, and primer you want, but by looking at the close relatives of the powder, you can get a starting point and work the load up from there.
Having just started during this scarce time, i have components to build 2,500 cartridges, but that is using 4 different primers. Not ideal, but finding primers was the absolute hardest. At the end of the day however, i'll have worked up loads using various primers, powders, and bullets. Basically, when supplies become available i should have enough info to select the absolute best performers and then supply up for upcoming years! Oh when is the drought going to be over!!!!
Be organized and be safe!
Enjoy!