Online lessons are a very bad idea. If you are interested in improving, the only safe way to improve is to have lessons with an experienced teacher. If you can’t afford singing lessons, the only safe alternative is joining a choir but the results won’t be the same. Please do not try to train yourself because you will probably end up damaging your voice. In fact, it takes lots of years to learn how to sing properly and only a teacher can help you with that, you can’t do it without any help. Even very talented people must take singing lessons in order to learn about correct techniques. Nobody is too talented to have lessons and nobody is born with good techniques.

Do not rely on youtube tutorials or other tutorials from the internet because you can misunderstand things easily, and many of those guys who claim that they are teachers or trained singers aren’t. Another problem with internet tutorials is that you don’t have anyone to correct your mistakes and you won’t even realize that you are making them until it’s too late.

Do not rely on advice that you found on the internet, many people know nothing about singing and they still try to give advice to others. Most of the times, what they say is wrong and harmful. Do not follow any advice given to you by self trained singers, they don’t know anything about singing even if they claim that they are experts.

The teacher has to be in the same room with you so that he/she will be able to hear your mistakes and help you with correcting them. Do not make up any weird techniques, they are dangerous and they don’t work.

Do not overdo it when singing, you should know your limits, if you can’t sing something just don’t sing it, straining your voice is really bad. Also, respect your voice type and your vocal range, don’t try to sing too high or too low if you can’t. You can’t change your voice type because it depends on the length of your vocal chords, only age may change that (usually puberty).

Do not listen to those guys who say that singing lessons are a waste of money and time and that you either can sing or not. People who label themselves as singers and claim that lessons are useless will probably end up needing a surgery to remove vocal nodules because they have tried to train themselves and have developed bad habits and techniques. Singing lessons work and they are very useful unless someone is tone deaf! It’s always wiser to spend a little more money for a teacher than giving this money to a doctor to remove weird things from your vocal chords. I hope this helps, good luck!

The only safe way to learn good singing technique is to have offline, face to fave lessons with a voice coach. With online lessons/YouTube videos you never know 1) if the person is teaching you correct and safe singing technique and 2) that you're implementing those techniques correctly.

There's no need to be scared. As well as teaching you safe technique, a good voice coach will also encourage you and help build your confidence while singing.

Good luck!

I really doubt that there are online programs that help you learn to sing, because it takes a teacher to recognize specific needs.

Anyway, it's all about the vocal chords. It's entirely possible that you have an abnormally small throat (making your voice higher), but I doubt it. Just listen to styles you admire and try to imitate it.

If all else fails, simply get a music instructor.