Learning to lead.

Me and my friends learned self taught from the books and mags, pre internet. If you are dumb and too bold/rad you are more likely to get hurt. Use common sense and try to figure out what the gear does. Take a lesson from a professional. Be wary of free advice, from anonamous sources.

Learn how to make a safe anchor. Do some (clean) aid climbs on top rope. You will learn what good gear looks like from experience.

Take your time. Be redundant. Double check it, back it up.

Learn and practice self rescue.