I just published two more tutorials for beginners or anyone else interested.
These focus on Pulse Width Modulation.

Doepfer A110 VCO /A145 LFO-Pulse Width Modulation
http://www.youtube.com/watch v=r51sglRpnrE


Doepfer A110 VCO /A145 LFO- More Pulse Width Modulation
http://www.youtube.com/watch v=a2yi58uCEkg


As always please leave feedback and/or suggestions. Thanks.
Raul