Here are a few quick tips to get you started:
Categories
The community site opens with the "Categories" list but it also can display the Latests, New, Unread and Top posts (see figure below with Top selected). Also note that on the right there is a +New Topic button that if authorized allows you to create a new topic.
Topics are displayed in a column on the left. Going from left to right, you have the topic title, the topic's category, a list of participants' avatars, the number replies to the topic, the number of views and its last activity date.
Clicking on the title or post count will bring you to the last post that you read in the topic. Clicking on the like count will take you to the start of the topic in summary mode, if available.
Reading
To read more, just keep scrolling down!
As new replies or new topics arrive, they will appear automatically – no need to refresh the page.
Navigation
For search, your user page, or the ☰ menu, use the icon buttons at upper right.
Selecting a topic title will always take you to the next unread reply in the topic. To enter at the top or bottom, select the reply count or last reply date instead.
- While reading a topic, select the progress bar at the bottom right for full navigation controls. Quickly jump back to the top by selecting the topic title. Press ? for a list of super-speedy keyboard shortcuts.

Replying
To reply to the topic in general, use
at the very bottom of the topic.
To reply to a specific person, use
on their post.
To reply with a new topic, use
to the right of the post. Both old and new topics will be automatically linked together.
Your reply can be formatted using simple HTML, BBCode, or Markdown:

Want to learn Markdown? Take our fun 10 minute interactive tutorial!
To insert a quote, select the text you wish to quote, then press any Reply button. Repeat for multiple quotes.

To notify someone about your reply, mention their name. Type @ to begin selecting a username.
To use standard Emoji, just type : to match by name, or use the traditional smileys 
To generate a summary for a link, paste it on a line by itself:
Actions
There are action buttons at the bottom of each post:
To let someone know that you enjoyed and appreciated their post, use the like button. Share the love!
If you see a problem with someone's post, privately let them, or our staff, know about it with the flag button. You can also share a link to a post, or bookmark it for later reference on your user page.
Notifications
When someone replies to you, quotes your post, or mentions your @username, a number will immediately appear at the top right of the page. Use it to access your notifications.

Don't worry about missing a reply – you'll be emailed any notifications that arrive when you are away.
Your Preferences
All topics less than two days old are considered new.
Any topic you've actively participated in (by creating, replying, or reading for an extended period) will be automatically tracked.
You will see the blue new and unread number indicators next to these topics:

You can change your notifications for any topic via the notification control at the bottom of the topic.
You can also set notification state per category, if you want to watch every new topic in a specific category.
To change any of these settings, see your user preferences.
Community Trust
As you participate here, over time you'll gain the trust of the community, become a full citizen, and new user limitations will be lifted. At a high enough trust level, you'll gain new abilities to help us manage our community together.
We believe in civilized community behavior at all times.
Enjoy your stay!
(If you need to communicate with staff members as a new user, just reply to this message.)