The BBC has a lot of useful material, including these games for practicing tones and characters: http://www.bbc.co.uk/languages/chinese/games/
Check out BBC Español and see how much you can translate and understand!
http://news.bbc.co.uk/hi/spanish/programmes/newsid_3089000/3089343.stm
Thanks to BBC Languages, check out these videos to practice your greetings and make sure you are pronouncing them correctly.