Ah, the SCP Foundation. A collaborative horror writing project born on the web's most notorious imageboard, forged from creepypasta and American militarism, chiseled into a vast network of thousands of articles and stories. If you actually don't know what it is, congratulations on being one of the lucky ones to learn about it today! I'd recommend poking around on the website I linked up there, especially their about page and FAQ. I first found out about it myself in 2012, when an obscure little YouTuber going by the strange name of Markiplier played SCP Containment Breach (a very popular fangame) for his channel. This game was one of the first major waves of popularity for SCP and was probably the thing to get the most people into it up until it started going nuclear on Roblox.
Once I got into it, I was hooked. It hit the perfect notes of horror and strange sci-fi organization for me, especially since I was pretty squeamish about horror and I liked the Containment more than the actual Scary most of the time. In high school, I did not have a lot of friends, so I spent most of my free time in the school library reading SCPs on the computers there. I singlehandedly got TVTropes, the SCP Foundation, and several fanfiction websites blocked on the school's internet filter! It took them a while to catch on, though, and in that time I immersed myself in the world of SCP.
Recently, I learned an artist I liked for completely unrelated reasons had written several fantastic modern SCPs, and it brought me right back to my teenagerhood of reading stupid scary stories in the library...so I decided to use that interest re-ignition to go back and read as many as I could, over a decade since I first tried. I'll be doing this until I either get bored, or get so fed up with terrible stories that I don't want to do this anymore.
I should note, the way I'm going to do this is NOT how I would recommend someone first try to get into SCP. What I recommend, and what I did myself, was checking out the top rated pages on the site, both new and old, to get a feel for what authors and subjects you like, and get a taste of the best SCP has to offer. Reading every single one in order is a lot of quality and content whiplash (and starting with the oldest ones is definitely not good for getting the feel of how the site is now), but for writing about them rapid-fire like this, it's the method I wanted to use.
...I say that, and then I immediately make my first exception. I am NOT reading 001 first. If you really want to read them in order with me, don't read 001 first. SCP-001 is not one SCP, but rather a whole lot of "proposals" for the coveted first slot on the list. I haven't even read all of them myself, because there's new ones for every series (every 1000 SCPs marks the line of a "series") and since these are proposals for SCP Number One, they tend to be very long and elaborate deals, or at the very least have a lot of context.
I'll start most of my mini-reviews with a sentence kind of summing up what the SCP is, and I'll end each one with a rating, similar to the ones on the site -- the way pages get popular, and featured, and chosen for deletions and rewrites is through a voting system. Many people will leave comments stating why they're choosing to rate an SCP a certain way, and though I would not dare leave all these as comments on the actual articles (I'm petty in a lot of these and they're not all super elaborate opinions), I have certainly read a lot of comments, and I think the rating system is a good way to sum up what I feel about an article. +1 means I liked it, and support it being on the list. +0 means I wouldn't upvote it, but would let it be as is. -0 means I wouldn't downvote it, but think it needs some work or is missing something. -1 means I don't like it and think it needs a serious rewrite or even deletion.