So basically this is the advanced user tutorial after doing it:
First of all, try creating any post. Press the edit button to edit it.
Then delete that post with the delete button. It should say “(post withdrawn by author, will be automatically deleted in 24 hours unless flagged)”. Note that you have 24 hours to undelete a post. Press the undelete button to undelete it.
You can also update the notification. At the very bottom, It gives you 4 options.
1.muted- you will not get any notifications about this topic
2.normal- you will get notification if someone @mentions you or reply to you. This is the settings by default.
3. tracking- you will also get a count of new reply.
4. watching- you will get notification about every event that happened with this topic, even if they do not involve you.
Polling: Press the gear button on the very right. Select build poll. This is an example: