Well teaching everyone no, that would be too much energy and I mean literally there are certain rules you'll understand later on. Publicly though if you want to start I will happily point you in the right direction. Look into the following areas: 1. Fire Kasina (a kasina object is looked at as a totality but you can use other objects) I specified fire because it's best for visuals. 2. Visual Snow can be used instead of Kasina if you already have this “medical condition”. The static you see with visual snow, that looks like tv static is energy in its base form, this can be developed by observation and thought manipulation. Audio static is also applicable, look up the Ganzfeld effect to try examples of this. 3. Hypnagogia, the main aim of the previous two of course is to induce hypnagogia, are they really just hallucinations? I wonder...Again I'm warning if you're mind isn't strong you're like to induce psychosis once you start seeing the aether with eyes open. Just like you can see things other things can see you.
This energy is real, in fact so real that it saturates every inch of existence its amazing people can't see it. You can learn to see it as well if you want to, but I warn you once you start seeing it you won't be able to go back to a normal mind. If you want to know how to, then hit me back up.
I've done breath meditation for 10 years, I've since switched to something more visual. The breath meditation I did focuses the air touching the upper lip on the exhale and inhale. The thing with breath is that it's very subtle which means most of the experiences will also be subtle not visual (but it can happen) so body tingles, energy up and down spine, precise control of your awareness.
Pythagoras was a grandmaster so that's natural.