C. J. Moseley 
Cyberpixies [EPUB ebook] 

Life had always been fairly normal for Max Carter. Well, fairly normal for an orphan who had been raised by hippy grandparents. All he wants for his 13th birthday is a phone or maybe a laptop, like all his friends, but the Olds aren”t really the type to buy either for him. Imagine his surprise then when his other Grandparents show up, and bring him a lot more than he expected. Not only does he have a phone, and a laptop, but he gets a present from his parents that is going to change his life, forever. This is the first book in a new series that mixes humour and fantasy with computer science, written by British Indie SF Author CJ Moseley especially for younger readers.