Why don't you try becoming comfortable with Linux while using it in a Virtual Machine? I tried different distros too, and then I decided which one was the best for me.

We can't really suggest you one, if we don't know what you are going to use it for.

You may want to do some research, because different distros have different purposes (gaming, privacy, programming, easy to use etc etc).

Let us know, what your use cases will be?