This is a small compilation of some basic column techniques. I got some of these designs from an old Lego video that is in very small resolution. So think of this as an HD remake with a bit of additional content.
Lego Building Techniques playlist: https://www.youtube.com/playlist?list=PLN0dHQZoB6mSdV9p_7hAGb_6mkBDekRy9
As for the old videos,
Part 1: https://www.youtube.com/watch?v=-UKh3YrTsZE
Part 2: https://www.youtube.com/watch?v=x8PMS8gW9d4