I think I will have to print these tutorials to keep as 
a reference manual. Commercial models help promote 
products and services through ads in the electronic media such as 
Television and the Internet as well as through Print Advertising.

They appear in commercials/ads, on product packaging, in magazines, on billboards, etc., and help 
promote all kinds of products and services ranging from computer 
equipment to medicines, apparel, shoes and cosmetics.
Promotional modeling includes work at Tradeshows and Conventions, handing out 
Product Samples in Retail Stores, helping promote products 
or services at Car Shows, Boat Shows, Events, etc.
What differentiates Promotional Modeling from Commercial Modeling above is 
the fact that for Promotional Modeling you have to be there in person, because you 
yourself (not your photo or video) are doing the promoting.
Aspiring models often ask us, How do I get into modeling?
There are ample 'natural' resources on this earth to 
sustain humanity for eons if those resources are protected, nourished 
and used for the benefit of all of us, instead of those select few who exploit 
them for personal gain, and the almighty dollar.
You'll see hell on earth and wonder where's God or where is the good.