Automation on iOS is a complex process, but over on One Tap Less, they're collecting together some of the most useful actions for 1Writer, Drafts, Editorial, Launch Center Pro, Pythonista, Workflow, and even Safari.
iOS automation is essentially about finding ways to link apps together. This way, you can instantly pull data out of one app and put it into another. There's a ton of different actions included on the One Tap Less page, including stuff like "create a reminder Fantastical with a grocery list with items from Clear," "share the podcast you're playing on Overcast," or "replace a word in Terminology." It's not a comprehensive list by any means, but it does feature some great stuff. If you're interested in automation on iOS, this is a great place to start.
Actions [One Tap Less]