Propagating roses from stems?

Im interested in propagating a couple of my, and my neighbours roses. Ive seen videos on youtube showing propagating using the stems and hormone powder. The videos are a bit vague, just wondering if anyone has had much success with this system of propagation? Or a better way?
Ive also seen in the video's, propagating rose stems in a potato? has anyone tried this? and do you not just end up with a load of potatos?

 

Roses are really easy to propagate. This is what I do. In the late summer or early autumn cut some stems about a 10" long, cut below a leaf node, remove the lower leaves and place them in a large pot filled with sand. Keep them wet if the weather is dry in the autumn and then forget about then until about March. Most will root by then.

 

I think I'll steer clear of "Rose " questions for a bit lol.