I will only touch the basics about Shiv Swarodaya here. However, there are a few fundamentals about Yoga that everyone should know.
1) For all individuals, the flow of air / breathing occurs in either left or right nostril. (Medically, this is due to changes in the sinuses). When the flow is through the left nostril it is called chandra nadi or ida or jamuna and when the flow is through the right nostril it is called surya nadi or pingla or ganga.
2) As per Vivekananda Maharaja, flow through the left nostril is usually auspicious for most purposes
3) Flow through the right nostril is good before going to war and meditation (Gurudev)
4) The flow alternates through left and right nostrils every 1.5 hours for a person in good health. For a yogi it changes every hour. For an advanced yogi, the flow is through the left nostril in the day time and right nostril at night time. This increases his longetivity
5) If you lie on your left side, the right nostril opens up and if you lie on your right side, the left nostril opens up. It is more effective if you are able to exert pressure in the axillary area while lying on the sides
6) Generally, when either nostril is open, there is minimal flow through of air on the other nostril too. The key word is minimal.
7) If the airflow is only through one nostril and not even a minimal amount flows through the other nostril then it is inauspicious to do any task
8) If the airflow is through the left nostril mostly and minimal air is through the right side it is called amrit yoga. It is very auspicious
9) If the airflow is through the right nostril mostly and minimal through the left side it is called Visha yoga and is inauspicious.
10) All the chogadias which hindus use come originally from the knowledge of the breath.
This is the bare essentials. There is a lot more to this which can be discussed later, including how to recognize the basic elements from breathing, how to effective in communications etc
Now, let us talk about Sushumna nadi. This is what the Yogi aspires. Sushumna nadi is said to be open when the air flow through both nostrils is EQUAL or if the breath changes from left to right and right to left with rapidity. This nadi is EXTREMELY inauspicious for wordly matters. It is an indicator of death, people disliking you for no reason, extreme difficulties etc. However, the same nadi is EXTREMELY auspicious for a Yogi if he can reverse the air flow, take the prana inside and it can lead to Moksha, or freedom. Without the Sushumna nadi opening, one cannot have any Yogic experiences
The duration of how long Sushumna remains open predicts remaining life. I will explain this later. For now, suffice to know that when the airflow through the nostril changes, one has to go through Sushumna for a short time. Now, you will understand why some days can be good, bad and ugly. Our breathing is constantly telling us and reminding us of impending success or problems
Lastly, one more thing. When we breath out the breath goes out for a certain distance. This distance is measured by a Yogi by the distance measured in the width of the finger. Normally, this distance, the distance the breath travels out is 12 finger breaths. During activities it goes up. If a person can just decrease the distance travelled by the breath by one finger breath, he or she begins to feel warm. If the breathing goes down to 7 finger breaths, he begins to experience Samadhi. I will discuss this more when I translate Muktashastra.
My daughter asked me the other day, why did she feel so warm while doing mala. The answer is, her breathing had slowed down from the normal 12 (not rate of breathing but the distance travelled outside the nose) to 11. The more one can decrease it, the more Yogic powers appear.
How does one decrease the distance travelled by the breath? That is the real art of a Yogi! Just forcefully breathing slowly DOES NOT work.