If the Private messages section in the left sidebar is collapsed, click on it to expand it.

Click on a conversation under Private messages.

Read the conversation, scrolling down with the mouse or by pressing PgDn.

If the conversation is not of interest, you can mark all messages as read by jumping to the bottom with the Scroll to bottom () button or the End shortcut.

Click on the next conversation in the left sidebar, or use the P key to go to the next unread conversation.

To view all your private message conversations, click the more conversations link at the bottom of the Private messages section.