As long as you have a valid email address you can to sign up to Shell Go+ via www.goplus.shell.com.
If you don't have a smartphone you can request a Shell Go+ loyalty card by requesting one from your new online Go+ account. Follow this link to find out how to order a Go+ card and key fob.
You'll need your plastic Go+ card with you each time you visit a Shell Service Station to claim your rewards and participate in the programme..
Once you have an online Go+ account and providing you are already a Shell Energy customer you can then link your two accounts together to get your fuel saving. Follow this link for further help to link your Shell Energy account with a Shell Go+ .