Every forum category you see is “active” and valid to post in.
Choose the category you want to post in.
Click on the blue button at the top right to make a New Post.
Type your post and edit as you wish.
Add links, research, quotes, spoilers, etc.
Substantive posts show both evidence and thought.
Replies count, too.
All the same requirements for credit as for a regular post.
To mark a Spoiler ⊕, choose a title that will be what readers see.
Then type your ideas inside the [spoiler ] [/spoiler] brackets. Those are the words which will be hidden.
When you post the entry, it should look like this!