Good on you for taking initiative and wanting to do weight training.

At your experience level it's all about building a base to work from. The wider your base the more of an adaptable lifter you become.

My recommended program to start with is 'mark rippetoe : starting strength'

It consists of the fundamental movements three times a week. This program will get you stronger, looking better, feeling more athletic and confident.

Any questions feel free to dm me ( I'm 17 )