Hi Kristie. I cannot give you a reference but what I have done all my life, and what I teach my kids, is that you genuflect with your right knee touching the ground for God (e.g. when passing by the Tabernacle)
Correct. Genuflecting is a shortened form of kneeling from midieval times. Kneeling first on the right knee would make one more susceptable to attack, so it was considered a greater sign of respect and trust. To kneel on the left knee used to be considered an insult (equivalent to raising the visor of a helmet with the left hand… so that you could still keep your right hand free to reach your sword). Today, however, this distinction is little known and most people wouldn’t notice the difference…
Only if you wish to insult someone…
For adoration, some folks will do right knee and some will do both knees, but I don’t think it is spelled out.
Depends on the point of adoration and what is stated for the laity to do. Genuflect = go down on your right knee. Kneel is both knees, and if we’re being traditional you would go down with your right knee first, and bring your right knee up last, but again, most people don’t follow said traditions.