General

http://www.atptennis.com   ATP site: news, photos, results and rankings. Info from ATPs to challengers

http://www.wtatour.com    WTA main tour news, photos, results and rankings

http://www.itftennis.com/mens  Main source of info for futures results and draws plus a great player bio index

http://www.itftennis.com/womens   Info on WTA challengers and futures

http://www.itftennis.com/juniors    Info on the junior tour

http://www.tenniseurope.org   Great site for results and draws from mens futures, womens challengers and futures and junior tour events held in Europe. Generally gets info sooner than ITF sites

http://www.stevegtennis.com Great source of links to official tournament sites and entry lists for the mens tour

http://www.lta.org.uk   LTA official site. News, results and draws on British tournaments and updates on players competing around the world. Useful for all levels of players with info on how to find your local club, tournaments in your area etc

http://www.britishtennisparents.com Judy Murray's site for parents of junior players

http://www.tennisalternative.com Lively site reporting from and discussing the Challenger tour

http://www.myp2p.nl/ Website often giving links to live streams of ATP tournments, slams and master series

http://www.bbc.co.uk/tennis

http://www.menstennisforums.com

http://www.wtaworld.com

http://www.gbtennisgirls.com Forum discussing the female British players' progress