*Basic Invasion: 3-3 Invasion*
Xinwen had actually compiled his own Weekly Lecture series in the year 2008 and was not really shared. Taking this opportunity, Xinwen will upload the note weekly.
The note has been simplified for more comprehensible for beginners and low digit kyu.
The first lecture note is titled: Basic Invasion 3-3 and its timing; highly encourage everyone to revise their understanding of the this simple invasion.
The note can be downloaded here: http://www.mediafire.com/?9etpt91z72fmcjq
http://senseis.xmp.net/?33PointInvasion [Introduction of 3-3 Invasion with variation]
http://www.lifein19x19.com/forum/viewtopic.php?f=15&t=487 [Discussion of 3-3 Invasion and its Life and Death]
http://www.danskgoforbund.dk/om-at-spille-hoshi/about-playing-hoshi.html#san-san-invasionen [Great variation of 3-3 Invasion]