Should I buy the usual MacBook Pro full retina for 1099 or on currys there is a MacBook Air with 8gb memory for 950 I will use it for home use as I'm 15
Honestly, its going to depend on your preference and if you really want to spend the extra money for the Retina Display. My 16 year old had the same choice and he chose the Air because he liked the form factor better.
I have to agree with Nikki as that rational of thinking is good and being 15 whether you are paying or the parents, I think they need to be involved because of the money involved, You have to make sure there is a warranty on whatever you ultimately decide to get and from where.