Speaking of which, I'm also learning Spanish. Liam, I'm from the UK where we only speak one language. The one thing I really, really wish I'd done is to have learned another language. I'm doing it now, but it's so much easier when you're young.
It doesn't even matter what it is – pick one you like the sound of. French, German, Italian, whatever. When you bump in to someone later in life and you hear them speaking another language and you can interact with them, there's no greater satisfaction.