Lots of good advice in here. A few things: 1) get a buddy who KNOWS what they are doing it show you the ropes. I have been reloading for years and still phone a friend from time to time. 2) Rely on your eyes versus sensors and alerts. For instance, I visually check that powder is in every case before I put a bullet on top. Ever though I am running a progressive press at ~450 rounds an hour, there is still plenty of time to visually inspect for powder. To me that is the most important check in the entire process. No one wants a squib. 3) Like others said - go slow while loading. When I started I can’t tell you how many time i got distracted like 50 rounds into my session and had a mental block as to whether I saw powder drop in the last few cases. So, i put them in the scrap bin to pull later and started over. Good luck...you will love it once you get the hang of it!