Put the entire applicator inside you, so that you feel your fingers touch your vagina. Push the end of the appicator so that it dispenses the tampon inside you. When your done there should be no tampon at the opening of your vagina. It should be up inside you an inch or two. The only thing that should be seen is the cotton cord.
Try using tampons with plastic applicators..They go in easier if your having troubles.
Just relax and take a deep breath...Don't tense up because your muscles down there will tighten..And make the whole process harder, and more uncomfortable. It doesn't hurt a bit..Even if you are a virgin.
You shouldn't feel it if it is in right...
Have fun!!