Back to basics

First of all, thanks for making me part of ur community..

Ok, so i have 19 years old.. I was allways interested on hacking devices.

I want to know were to begin modding or hacking my device, i have basical knowledge on what an adroid devices is..

I woud like to get the most of the ram making my device faster.. Improving signal, internet..
I would to know how my device operate.. Taking advantage of what my device can do

Can i make my android pc like..? Can i make a ddos attack from my device or can i hack any other devices in the network

There are many thing i want to know of how an android operate but i cant think on any other questions you are the expert please take some minutes explaining me how can i do so many things of android..

Thank u for ur time and please apologize me for my bad english. My device is an LG G3 .. CARRIER: BOOST MOBILE