http://bps12.idav.ucdavis.edu/talks/03_lauritzenIntersectingLights_bps2012.pdf - Paper about tiled lighting and how to optimize it for many lights
http://diaryofagraphicsprogrammer.blogspot.de/2011/02/shadows-thoughts-on-ellipsoid-light.html - Some general information about ellipsoid light shadows, which also pretty much applies to point lights
https://developer.nvidia.com/sites/defau...0to%20Linux.pdf - Some very nice general information about porting from directx to opengl with lots of usefull information

Lite-C Tut. 1 Lite-C Tut. 2 Lite-C Tut. 3 (en)
Shader Tutorial (ger)

http://www.slindev.com