Just go to safely run ranges and if in doubt make sure the people running the range are certified and give them the links I provided so that they can educate themselves.
Shooting is one of the safest sports in the country!
But the reason it is so safe is people (NRA, NSSF ) are constantly vigilant and working to keep it safe and make it safer.
Any child that is young enough to keep putting their hands in their mouth should be barred!
Any adult that cannot follow simple safety rules should be bared!
Can you go the range and abide by the simple rules of No eating, drinking, smoking, putting on lipstick or chapstick!
If so you can keep yourself safe from lead poisoning.
Remember anyone can call a "cease fire" on the range if they see something out of line. Any good range safety officer will not be offended if you ask what certification they hold.
A good first video to watch is Introduction to Range Safety and Etiquette - YouTube
This is by Barry Laws who has a range at Louisville KY made in conjunction with NSSF - - - This is publis domain and both Barry and the NSSF encourage you to keep copies on hand and have all shooters view it at least once a year. I like to have the people view in groups of 5 to 10 and discuss it afterward ( I have had several groups spend an hour or more in discussions and replaying the video )
Remember we all need to keep our sport the safest in the country!