Once you're involved in the forum and the software knows you're not a spammer, you can send private messages to other users.
There are two easy ways to start a new private conversation:
Option 1
- Click the envelope icon in the top left corner
- Click Send a Private Message
- Enter the recipient's forum username and your message
Option 2
In a forum thread, click on the member's name to show their profile pop-up
Click Send a Private Message