Starting already
My wife, myself, my daughter, and my son-in-law are all target shooters. My family has blessed me with 2 granddaughters (2 and 3) and a grandson (14). My grandson has his own .22lr pistol, .22lr Marlin rifle, and .410 gauge shotgun. When the family started thinking about shooting for the girls, we were concerned about how to bring them up around firearms. I have found that young children learn from repetition but are not able to sit for extended periods of time. As we cleaned weapons, the girls loved to watch and we always tell them about safety. To start them with their own firearms, we started with the ever infamous water guns. We explained carefully that these were toys that could be used to shoot targets in the back yard. Of course, they eventually turn them on each other, but we explain again that they are toys and "real" guns are not toys. We always emphasize the safety aspects. The girls are now old enough for air soft guns which they can only shoot at targets. They understand that they cannot point airsoft firearms at each other. My grandson moved from a daisy BB gun to an air rifle prior to getting his own "real" guns. (Thankfully, he always treats any firearms like a "real" gun). Since he now shoots with his parents and grandparents, he has volunteered to allow his sisters to use his BB gun and air rifle when they get old enough. (Makes a grandpa feel proud). In anticipation of the future, my wife and I purchased a pair of pink cricket .22 lr's for the girls for future Birthday presents.
As someone mentioned, children's attention and enthusiasm may ebb and flow over the years. We intend to let the children come and go with their enthusiasm as their moods change but the safety aspects will always be there. Hopefully, their love of firearms will never totally disappear.
As a side note, I have introduced several people that I know to the joy of shooting. Many of these people have children and grandchildren that they would like to introduce to firearms. I am proud to say that many of them have asked me to help with the introduction. Since I collect firearms, I am able to provide instruction tailored to the age and maturity of the children. I hope that I am doing my part to bring the next generation of shooters on line.
I place the word real in quotation marks for emphasis only. I am teaching all the children that all firearms are real but some firearms such as water guns can be used for fun purposes such as squirting each other.
BTW, what do others do in concerns to paintball guns?