Hey Apple....
You've unwittingly stepped into a rattlesnake field. There are a number of opinions on what the "proper" way to sing is, and the people who hold those opinions will argue furiously that their technique/opinion, etc. is the best. I hold one of the more difficult-to-understand techniques as the best, but I'll share a few things that will probably be generally accepted by most.
If you approach a teacher and they try any of these, KEEP GOING!!
1. They promise miracles in a very short amount of time.
2. They have you do goofy things like lift the end of the grand piano while you sing. (I've heard of it, really....

)
3. They make you make funny faces when you sing vowels.
4. They say "drop your jaw." (try this... sing "Ahh" and drop your jaw. Do you feel your throat/air passage begin to shrink up? Can that possibly be good?)
5. They tell you about pushing your stomach muscles or diaphragm in, or squeezing your abdomen in order to support your breath. (Truth is, you want the reverse...)
6. They claim that they can give you a six-octave range. (or ANYTHING silly like that)
If you approach a teacher and they say these kinds of things, listen carefully, and consider them:
1. Encourage ways of achieving/promoting resonance in tone.
2. Encourage strategies for singing without stressing the vocal cords - or even better.... strategies that will promote the longevity of your voice.
3. Talk about how focusing the voice and supporting the breath by ensuring the diaphragm is kept down (and therefore open) are the key to singing.
IF YOU FIND SOMEONE WHO TALKS ABOUT INHALING THE VOICE AS PART OF A FRAMEWORK OF THE BEL CANTO TECHNIQUE, SIGN UP FOR AT LEAST THREE YEARS OF LESSONS, AND VOLUNTEER TO CUT THEIR GRASS ON A REGULAR BASIS!! (inhalation is the key, here... and I know that now you are thinking I'm nuts.....)
For more info on this, go to this thread:
https://homerecording.com/bbs/showthread.php?s=&threadid=58771&highlight=bel+canto
Chris