Looks like the Great Firewall or something like it is preventing you from completely loading www.skritter.com because it is hosted on Google App Engine, which is periodically blocked. Try instead our mirror:
This might also be caused by an internet filter, such as SafeEyes. If you have such a filter installed, try adding appspot.com to the list of allowed domains.
The Routledge Course in Modern Mandarin Chinese is a two-year undergraduate course for students with no prior background in Chinese. Designed to build a strong foundation in both the spoken and written language, it develops all the basic skills such as pronunciation, character writing, word use and structures, while placing strong emphasis on the development of communicative skills. Characters start at Lesson 6. Thanks to Ben Wang for this vocab list.
The Routledge Course in Modern Mandarin Chinese 现代汉语课程, Level 1. Written by Claudia Ross, Baozhang He, Pei-Chia Chen, Meng Yeh. Published in 2010 by Routledge. 416 pages. ISBN: 978-0415472494.