I want to read the Bhagavad Gita

So as the title says, I want to read the Bhagavad Gita. I had read from Swami Prabhupadha's Bhagavad Gita, 'As it is' in my school library, but this isn't possible now because my schoolis having session break right now.. I remember reading some shloks from adhyay 4 (Transcendental Knowledge). I didn't understand most of it, maybe because of the hard and tough language. As a 15y, I'm interested in learning the principles of the Gita.. Is there an online version where the Bhagavad Gita is written in simple words (preferably english).. Also, from which chapter (adhyay) or page should I start reading? (I don't know if this question has been asked before, so I'm sorry if this has been repeated)