I learned the 2/4 Dots by learning the 22-form. This is not the easiest way to learn it but there is context. So as difficult as it is to learn this way, it is still the better way to learn it.

However, for those who cannot learn so many things at the same time in one technique we can try to learn the basics of 2/4 Dots by using the simpler way of looking at the 2/4 Dots that I wrote about here.

1) Body upright, both feet parallel, high horse stance (Dot-C)
2) Open up right foot (Dot-C)
3) Shift Dot-C to Dot-R, turn body to right, left foot turn in (right forward stance)
4) Mentally keep Dot-R, lift up left foot, step forward and place left foot down
5) Shift Dot-R to Dot-L, turn body to left, right foot turn in (left forward stance)
6) Mentally keep Dot-L, lift up right foot, step forward and place right foot down
Repeat

When you read (1) to (6) it sounds just like a typical stepping exercise. The challenge is to keep the 2/4 Dots clearly defined in the mind and more importantly, use it to train your body to move in an apparently effortless, yet controlled, non-telegraphic manner.

This is something that only those who train this way will know what the difference is, and how this difference can help you to do pushing hands, which later can translate across to other learning skills.