always wanted to learn more
Practice everyday. Don't smoke or drink (like Adele does), and most importantly: DONT push your voice past its ability, once you start cracking or going out of tune take a break, try not to strain your voice when you're sick. I have been singing my whole life, but I joined my advanced choir in high school and I improved so much just from having to practice and perfect everyday. And also, find YOUR natural voice don't try to fake your voice to sound like someone else, your voice is unique in this world and you should rock it out.
practice makes perfect, try swallowing honey it feels up the cracks in your throat and helps u sing better :) worked for me
Take a class, or find an instructor. Observe other singers like Adele, Edith Piaf...