You'll be fine, check out the usual trackday suspects, but I'd start with the No Limits boys.
I know there are a few guys on here going off to Jerez in April - try a search and get out there with those guys.
You could also consider the CSS at Almeria - I think they have spaces in April (new date) - more expensive than a trackday, but loads of instruction and if you can fund it, will be ideal for your "noviceish" status.
Cartagena is great, its a bit remote (aren't they all?) - I prefer Almeria, but they're all good.
You can get the flights, bike transport, accomodation all in package with some of the operators -
Try here;
http://www.uktrackdays.co.uk/ They cover Euro dates too.
Good luck
Tim
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