Renting boards in spain

How skepical are hire shops (presuming there are hire shops) in spain about renting boards to abosolute novices, and could anyone reccomend any places with big ass waves (Spain Canaries Portugal)
I am with a couple of friends going on a holiday- we are strapped for cash so the place would have to have campsites, or can you just pitch a tent most places in spain?
also we can't afford lessons, and a friend who has had a couple months surfin' experience assures me he can teach me as well as any school (He's pretty xxxxx but it's the only option)- Is it more just a case of practising on waves than having lessons?
also, has anyone a ballpark figure on how much renting a board for a day costs?
muchas gracias!

I am with a couple of friends going on a holiday- we are strapped for cash so the place would have to have campsites, or can you just pitch a tent most places in spain?
also we can't afford lessons, and a friend who has had a couple months surfin' experience assures me he can teach me as well as any school (He's pretty xxxxx but it's the only option)- Is it more just a case of practising on waves than having lessons?
also, has anyone a ballpark figure on how much renting a board for a day costs?
muchas gracias!