SalesMOJO University offers the researched based online Bite-Sized video courses 

We hate PowerPoint; We also hate 8 hours-long training sessions. We never had the patience to sit across to the long training session; therefore we have applied the 80-20 rules to our training courses. In general, most of the training gives only 20% of the new information and 80% of the old Gyan which we already know, so we cut that 80% of the old information and brought it down to 20% to connect it with the new 20% of the information. And hence made our courses Bite-Sized for modern learners.