Originally, I was not aware that I needed to Tovel new pots etc. and I used them new. Now I have dishes that have been tovelled and some that have not been Tovelled. I would appreciate advice on what is best to do now.

You should check your dishes and pots, whether they were made in Israel. Any glass or metallic dishes that were not made in Israel, have to be Tovelled! Bebirkat Hatorah, Rabbi Yitzchak Grinblat