It’s an app/website that you can use for messaging people, and there’s servers which are basically a bunch of people in one big message
It's a less-good message board where it's one big thread instead of lots of little ones. But with more people on it!
And voice-chat, if that's your thing... 
(again, unless I'm missing something?)
eh I just stay off of voice chat, but overall the other boards are mostly something I use to keep a track of how to tag and what tapastry events are going on (they don't really tell you about all of them here, some are discord only art events, like the discord banner event right now). the fun thing about discord is that you can just lurk without needing to participate and still get the info you need off of it. But, I usually pop in to say a few things and then pop out.
Discord is great if you need a chat space for your group of friends but big servers like the tapastry ones? That's just unusable to me. Joined the same day it launched, introduced myself, tried promoting my comic but couldn't because bot didn't like it's title and... got overwhelmed with the speed of people writting there and started muting channels cause the constant notifications were too distracting. And next day, when I realisied that I've pretty much muted whole server and left, cause at this point, what's the point?
The initial flurry of activity on the Tapas Discord will taper off over the next few months - that's what happened to the Webtoon one, and while it's still very active, it's a lot calmer than it was.
I wasn't huge on Discord initially either, but I've definitely come to love it! Some channels are quiet, cosy little places, while others are like a big meeting hall full of people talking. There's a lot of variety to be had!
Unfortunately, the Tapas Discord doesn't have threads enabled - I find that a really useful feature when there are like, five conversations going on in the general channel, and you want a more focused conversation with the people you're talking to.
I'm not really new to Discord, but I also still shy away from servers with more than 50 people at max.
It's like you're stepping into a room with 700+ people and everyone is talking at once. There are like 100 different channels of which maybe 5 are interesting for you... Nah I tend to stick to smaller servers with specific topics/user groups. There's a small user overlap most of the time but still, enough new opinions to not get bubbled in.
I’m scared of clicking the wrong thing.
I have clicked on the wrong gif a couple of times too. 
Bit awkward.
I've been using Discord for some time now, but I'm not really in many servers because, true, it is pretty overwhelming for a lot of reasons and I admit being a little bit more shy, but also quite busy. I only get on my PC during weekends because I'm usually working the whole week and recently decided on a make-over to go out more.
I pretty much agree on this one, I usually mute the bigger servers due to that. Although, I like to get news from announcement channels every so often, to see what's up ^^"
When it comes to being active, I've only chatted with people on 3 servers and on the very first I've ever joined, I'm pretty much a regular because I've known the other 7-10 active users a little longer and we play on our Minecraft server a lot, but that's all to it. In the end, you decide for yourself what you're more comfortable with.
It has settled down quite a bit but it can give overwhelming fast! So (as SoenKai said) I tend to stick to specific channels and that's very helpful ^^
I signed up to discord but I couldn't figure out how it works. There were lots of people talking and I didn't know what to do so I just left. Think I'm too old for it (I'm 32...)
I started using it about a year ago and tbh, I'm more into joining small chill servers than the big ones. Way to overwhelming to me. 
I think it depends what kind of Discord server you are in. Some are OK and well organized. And some are overwhelming and there are too many channels and users and it's too much and I get too scared to post anything.
Hey thank you everyone for the comments and support! That made me feel (somewhat) better. Does anyone know if there is a tutorial group on how to use the damn thing? (made me feel so old...)
I was hoping to use discord to promote my story, but I think I may just step back until it gets quieter. I get notifications about announcements, but I'm pretty bad with figuring out all the other functions.
May start a 30+ creator server though....that sounds like it might be small enough? I saw a button that looks like it makes a new server...I really like the threads here though.
Anyway, I really felt like someone dropped me in the middle of the ocean when I signed into the discord so who knows...maybe I won't go back.
LOL >_<
Yes, I am afraid of discord.
I entered and put a message on that thing of latin creators and then I didn't know what else to do.
Too many channels? No real reason to be there when there are the forums? Or am I too old for this new stuff? So many questions!
I'm, most of the times, pretty uncomfortable with Discord but sometimes I log in and see my friends (people I know from this forum) there and I try to join in their convos ^^
Still.. a bit scary
Not scary just useless xD
If it's a server of a few people where you can have meaningful conversations then yes, but those huge servers of hundreds/thousands of people, nah.
It's like walking into a convention, and looking around trying to find your two friends. There's a lot of people, and a lot of things you might be interested in, but you're not sure you can squeeze yourself into any of them, and you're to daunted to even know where to start.
I also used to be kinda terrified of Discord: the fact that the first few servers I joined (mostly fandom-related, nothing to do with comics or art) were full of drama and/or drama queens didn't help either time zones, English being not my first language and crowded servers with people having a thousand of different conversations at once made things even worse.
The Tapastry and Webtoon Canvas Discord did feel overwhelming at first (and during my first day on the WT Canvas server someone even downvoted my comic after I said something about the unfair rating system of the site, wheee 
), buuuut... now that a bit of the excitement from the first few days has faded, I find things to be a lot more manageable, actually? 
Conversations seem to happen at a much slower rate now, and overall I find myself preferring the fact that there's more people, meaning that no matter what time I'm online, there will always be someone else there. I also couldn't help but feel like smaller servers tend to have this clique-y kind of attitude in which if you don't participate often, you're basically treated like an intruder when you eventually join in... unlike bigger servers, where keeping track of who posts what is much harder and people won't care if you're online once a week or 24/7.
I still don't take part to stuff like voice chat or screen sharing, though, and I definitely still prefer the slower pace of forums for more in-depth conversations... but I agree with @noenoh about getting used to it due to its similarities with IRC XD that said, it IS true that it took me a LONG time to find the necessary courage to jump into conversations at random, so I definitely agree that it takes a while to get used to D:
I've been in a lot of discord servers and a few things really stick out to me when it comes to finding the more fun communities to be in:
1. There's a sweet spot in membership where a server is populated enough to be interesting without getting overwhelming - The largest servers I'm in honestly get muted. I check in every now and then, but it's the smaller servers with a dedicated membership that I find most enjoyable.
2. The better servers tend to be the ones that vet their membership - Regardless of size, a lot of the better servers I've been in are the ones that either require you to be vetted ahead of time, or only give you access to a portion of the server until you've been active for x amount of time. No one likes an echo chamber, but it's important to have people that mesh well.
3. A server is only as good as it's moderation staff - I've seen servers (and forums) with mods that are too lax or too strict, but the best communities I've been in are the ones where the mods have clearly defined rules and guidelines, and won't hesitate to act when a user is breaking those guidelines, regardless of that user's status.
there's more of course, like community feedback, etc; but I always suggest looking into discords that are either smaller or that vet their audience in some way at least if you want to have a good experience, or - better yet - start your own smaller server with some friends to get used to it all. Once you've gotten used to the smaller communities, that's when I start to suggest checking out the larger servers like what tapas and webtoons have. It's a lot less overwhelming that way.