I'm a fairly new reloader as well, and the more I reload and the more I read, the more I learn new places where things could go boom. I'm a kind of a book rat, and when I get into something that I'm passionate about, I'll read every single material I can find on it and I don't get tired of doing it. I own many (could own more) reloading books, spend hours reading on the internet, when I have read the first few pages of posts in the reloading section of CGN I go do the same on a different forum (sometimes I have to find a new forum because I'm done with all the other ones) Watch youtube videos (take it with a grain of salt but I like the visual) and recently started reading reloading magazines to get a bit more. I certainly spend more time reading then reloading lol. Hence I get sometimes accused of splitting the hair in half when I ask questions that are beyond my level of experience, but even though I don't necessarily plan on using it in my reloading process for now, It still tickles my interest and I will ask the question. Enough said..
The biggest thing I'm realizing now is this : You cannot (up to a certain level) substitute knowledge to experience. You can say someone did not act diligently by not reading enough manuals... I say you can read a hundred manuals, but if you have never heard the sound of a squib or felt the difference between that, a misfire, or a low charge, you will always be at risk.
Sure, common sense might help, but it's also an interesting thing... Is your "level" of common sense the same now that you shot and reloaded thousands of rounds than what it was when you started reloading? Also, IMHO, it's often people who think they have lots of it that lack it the most. Gotta be humble about your own common sense I think

. I think I got loads of it, and yet I don't fully trust it.
Just my 2 newbie cents anyways, but now that I'm starting handgun reloading, I'm getting more concerned about a lot of stuff lol
Edit : getting a mentor is definitely the best solution, although it wont cover Every situation, I think it is really the best option for learning, but I didn't get this chance yet, hence, I read more.