To add to this: AO3's tagging system is significantly more sophisticated than Wattpads, and it might be harder to grasp at first. Thats okay! Here's a little primer (and you can ask questions or read the FAQ whenever you want)
[Disclaimer: I am really autistic about AO3 tags and want to be helpful]
The only mandatory tags on AO3 are:
The Rating: What general age range it is written for. This is where a reader can check quickly how graphic a fic is going to be, so its important to be honest.
- (G)eneral Audiences is rated for most everyone.
- (T)eens is for 13+.
- (M)ature means that it contains non-graphic adult content
- (E)xplicit means it contains graphic adult content.
The line between M and E is a hot topic of debate: you will find porn and violence in both in varying degrees of on-screen visuals. Generally speaking, I like to think M ends before the pants come off and E keeps going, but your mileage may vary.
- Finally, Unrated is for people who opt out of defining this. This means an Unrated fic could be any rating, and if youre not okay with getting surprise Explicit content maybe dont chance it. This is useful for writers who arent sure where their fic actually falls, and dont wanna mistag their work, or who wanna write oldschool style and not give away any surprises
The Archive Warnings: OP told you about these above but I'll mention them again: They are:
- Choose Not To Use Archive Warnings
- Graphic Depictions Of Violence
- Major Character Death
- No Archive Warnings Apply
- Rape/Non-Con
- Underage
They're organized just like that in Alphabetical order as a multiple choice list. You have to tick off at least one, and you can tick off as many as are necessary. Remember that "No Warnings Apply" means none of the archive warnings are relevant to the fic, and "Chose Not to Warn" means any of them could be but there is no guarantee.
The Fandom Tag: what source material, be it a show, comic, boyband, book, or ancient Mesopotamian poem, goes here.
The Work Title: You have to name your fic something
Language: AO3 is open to all cultures and backgrounds, so it hosts works in a lot of different languages. You have to tag what language your fic is written in.
After that, the tags are optional, but they are very very useful, and I'll explain some more!
The Category tags are also multiple choice style, and these are where you tell readers what kind of Ships are in your fic:
- F/F :: female/female, lesbian, yuri, however your circle talks about women in a romantic or sexual relationship with other women
- F/M :: hetero romantic or sexual relationships
- Gen :: no prominent romantic or sexual, or at least none that are the main focus of the work
- M/M :: male/male, gay, yaoi, however your circle talks about men in a romantic or sexual relationship with other men
- Multi :: "More than one kind of relationship, or a relationship with multiple partners"
- Other :: it's literally defined as "other" relationships. your mileage may vary
Lastly we have the Longform Tags! (These are my favorite).
Although users can generally write these out however they want, AO3 will "wrangle" them (re: sort and relate them to) a searchable tag with a specific syntax. I'll talk about them only in relation to their AO3 standardized syntax, since thats how they get Auto-suggested when made filterable.
Characters tags are where the canonical name of the character from the Fandom goes. Some characters may only have one name (like "Mario (Nintendo)") while others may have a first and last name (like "Cloud Strife"). Some may have fandom suffix appended to them to disambiguate them (like "Burgerpants (Undertale)") and some may not. Some may have a pipe separating two equally important names in canon (like "Zelda | Sheik").
Relationship Tags are tags where you define what characters are in what relationship with other characters. They are written in alphabetical order of character name, first by the character's last name, then their first name, as one would write them in the Character Tag field.
A relationship can be written with either a slash (/) or an ampersand (&), and these mean different things. / means that it is a romantic or sexual relationship and & means it is platonic or familial. Therefore: "Sokka & Zuko (Avatar)" means that Sokka and Zuko are in a platonic or familial relationship with each other, and "Sokka/Zuko (Avatar)" means that Sokka and Zuko are in a romantic or sexual relationship. This makes them very different tags in term of content indication.
3+ characters in a single relationship tag is quite common and appreciated! However, it is AO3 standard for relationship tags to only contain one kind of relationship sign, either all / or all &. It would be standard-noncompliant to tag "Aang & Sokka/Zuko (Avatar)". For such complex relationship dynamics, multiple ship tags are recommended [such as: "Aang & Sokka & Zuko (Avatar), Sokka/Zuko (Avatar)"]
Additional Tags (aka Freeform Tags) are the most varied! This is where tropes, detailed content warnings, kinks, Alternate Universe tags, and everything else goes. Once you get to the Additional Tags, you have to get to know your fandom to see what tags look like. Every fandom has fandom-specific tags and it is a lot of fun to figure out what tags end up being prevalent in yours <3