I’ve condensed the answers to all the most common questions about configuring domains into a document linked in the manual:
https://manual.bubble.io/application-settings/configuring-dns-records.html
It’s a little sparse in pictures, but we will keep improving it over time.
If you’re having difficulties, look at the Frequently Asked Questions for an answer. We will keep iterating on these as new questions arise, but seeing as, as of three days ago I wasn’t seeing any new difficulties that we hadn’t already addressed, most common issues are addressed in that manual page.
If you still can’t find an answer there, ask a question here or in the original announcement thread and we’ll point you to the right answer, or add it to the manual.