Has anyone ever done online coaching?

Hello myself larry, and I’m a CBSE Class 12 student. Many times I have been stuck on finding the solution. But when my friend struggles to find the answer, they take help from the CBSE Online Tuitions. I am curious about how everything works with online training. It seems to have become more popular these days, but sorry to say still, I don’t have any proper knowledge online coaching.
Has anyone help me to understand how online coaching works in our daily life.