After successful login, click 'My courses' on the left panel, enter code subject or click particular programmes.
Choose your subject then finally click 'enrol me’.
If you didn't find a course, please click 'customise this page' which located at top right side.
Once done, the box 'Add a block' will appear on the bottom right panel.
Choose 'courses' and finally 'All courses' will appear at 'My courses' block which you can click and choose your particular courses to enrol.

For details, you may refer to the attachment.