For a new user, there's a lot of options in signing up for a Salesforce edition.
But if I wanted to sign up to learn how to use the platform, what would be the most appropriate edition to use?
Ideally I'm looking for something quite cheap or even free, but I do realise that Salesforce's pricing structure might not make that too easy! This will just be me using it at the moment to learn, so I'm not concerned about user limits or even limits on most other things in the system.
I came across a 'personal edition' online which sounds like it could be perfect, but I apparently it has been discontinued - and indeed I can't find a way to signup for it.
Is there any other option available short of the 30-day free trial?