Can anyone help me with the Spanish on https://tienda.yoigo.com/selforder

I am confused with one aspect. I already have a Spanish mobile number (old Carrefour card). If I want to retain my number from that does this mean I get the Yoigo card for €0 and still get €20 free credit? Something doesn't add up?

Yes, this is right. Pay attention that when you have to complete the order you need to have a spanish taxation number (so I had to buy a Yoigo on Ebay... :p)

Yoigo Translation
 

try:

http://babelfish.altavista.com/

translates bits, or whole web pages.

Sometimes the translation is somewhat strange, but you can usually get the idea. e.g. translating "using the internet" from Italian to English gives "being annoying on the internet", but once you get used to its' foibles, it's very handy.

Thanks guys... It's as I thought. In that case that's very good. A €10 carrefour car gives a total of €30 credit. That's €10 from Carrefour and then €20 from Yoigo. Not bad!

I do use Babelfish and Google translate quite a lot... (and had used on that page). I was just confused with the offer, and thought there was a missing link in my Spanish.