Select Next/Previous

This uses selection history to select the next vertex/edge/face based on surrounding topology.
Select previous just removes the last selected element.

https://docs.blender.org/manual/en/2.79/modeling/meshes/selecting/advanced.html#more-less
https://developer.blender.org/rB5d118f6dd7da

https://docs.blender.org/manual/en/2.79/modeling/meshes/selecting/advanced.html#more-less
https://developer.blender.org/rB5d118f6dd7da

You're a godsend, I just wanna let you know that! Do you want that image to be in here too or should I remake it?

Do you want that image to be in here too or should I remake it?

Remake it as you like. It was just an example for you.

It is better not to use the text embedded in the image, since it cannot be translated and it is difficult to change if necessary.

If you want to describe each image/step separately, use the table, such as here /modeling/meshes/editing/mesh/transform/warp.html.