Well the truth is I don't know how to protect my self, neither how to invocate and such. I can try to ignore them too actually, although in some cases it should be extremely hard... But it's okay, it's fun to experiment. And if they become a trouble I'll ask help from my Spirit Guides and Goddess...
In order not to attract negative entities (I think yoi said you still do) I suggest raising up yoir vibrations.