u/Ill-Proof-5155

I've been reading nueromancer and have almost finished it. I'm 14 years old and at about page 240 so as Rivera is talking with 3jane. I am completely lost. I have no idea what the matrix is or why 3jane is important. Is there any point of finishing the book? I'm thinking that I can read this book in a year or so I can come to it with a better understanding. (I am a bit young for reading the book as it is dense but I do read at a post high school level)