Andy,
Yes you have to join the SACU if you have a Scottish address.
Normal route is to Join the Kirkcaldy, Melville or SCRMC (Classic Club), clubs who will then send out forms for a licence. Not sure if you can apply direct to the SACU.
You need an eye test, then can apply for a licence.
Then you need to do one of the training days.
If you need any help, phone the SACU in Uphall, Yvonne in the office is very helpfull.
Contacts
Kircaldy Club - Hugh Ward 01337857755
hward333@btinternet.com Melville Club - Diana Dyce 01620 825 488
diana.dyce@tesco.net SACU - 01506 858354
office@sacu.co.uk Steve