Blocks are found on either side of the central column of any learn.gold area.
Some Blocks, such as the Administration and Navigation block, are integral and cannot be removed or hidden.
Other Blocks allow for different functions such as giving you a link
to the Participants list on the course area, links to activities or
forums on the course area, links to Twitter feeds, access to the Moodle
calendar and so on. Blocks can be added, edited, moved or deleted.
When you are setting up your learn.gold area it's best to think about
which ones you will use and remove any that that aren't useful.