@slowreader
To see a list of your postings, go to the upper right corner of any page and click on the Profile icon (looks like a trio of heads). Then in the dropdown choose My Profile. On your profile page scroll down and you should see 3 tabs: Posts, Replies, and Drafts.
Shortcut:
You can also click on your name (or others) that appears in any thread, and it will take you to your Profile to see your forum activity.
As for editing, you are quite correct that editing is not obvious, but here's how to do it.. To edit any question or comment, look for a tiny 3-dots blue icon to the right (and slightly up) of your question or comment. Click that and in the dropdown menu choose Edit.
