DiRAC Access - ScottishCovidResponse/SCRCIssueTracking GitHub Wiki
To get an account to use the DiRAC system, fill in the signup form at https://dirac-safe.readthedocs.io/en/latest/safe-guide-users.html#. You will get an email and should click on the registration link, and then click on the link to join a project ("dc003 - Scottish Covid-19 Response Consortium").
Then there are two emails (which come hours after your request has been accepted by the project owner) to say that your account has been enabled on two Cambridge systems; Peta4-Skylake and Wilkes2-GPU. You can then view your password and connect via ssh (as described in the email). You don't need your password if you have already setup a public key for ssh.
The DiRAC "Essentials Training" is a list of links to various webpages and YouTube. You have to create an account to use it (which is quick and easy) at https://dirac.ac.uk/register/ .