Technical documentation techniques

[ipsketchpi]

Hi

please suggest good tutorials our videos on you tube where I could learn best techniques how to make architectural drawings for retail shops. Particularly I need to make:
Wall plans

Elevations walls
Painting plans
Floor plans
Electricity plans
Inventory plans
Ceiling plans
Lighting plans
Etc..?

I am interested in techniques... how to do all right starting from the floor plan..... would be interesting to see some video where some skilled architect shows how he do all that stuff. Once I find some video but I have lost it.. it was a man from some base camp who showed around 1h long video, but now I cant find it on the web.

[TECHDAVE02]

[ipsketchpi]

Thanks!