I am a big fan of the Divi Builder plugin for simplifying the ability of clients to easily add columns, Calls to Action, Buttons, Videos,Pricing Tables and to help create their own layouts for different pages.
This system makes all those options much easier using drag and drop sections.
However, while I see the huge benefits in time-saving, the potential in designing and much more, often for clients it is all gobbledegook whether I tell them it is easier or not, so now I am slowly adding a collection of video guides to my website thaqt I think you will find useful, and save you trawling through the 100s of videos out there to find one you understand (I have done some of that for you).
Over time I expect to make some of my own to add, but for now you can check out the video guides here