Some good titles currently for free download in the UK:

http://www.amazon.co.uk/s/ref=nb_sb_noss_1?url=search-alias%3Ddigital-text&field-keywords=programming#/ref=sr_st?keywords=programming&qid=1359985877&rh=n%3A341677031%2Ck%3Aprogramming&sort=price