Most of the editors who contribute to eNotes are teachers themselves, as you can see by looking at their profiles. They are offering an entirely ethical service intended to help students at all levels with their studies. There is nothing wrong with using any legitimate services to help you with your homework. That includes legitimate services offered on the internet. Your English teacher would probably approve of your seeking additional sources of information, provided of course that you are not presenting other writers work as your own. Ideas are common property. If your English teacher should ask about your sources of information, I think you should tell him or her precisely what those sources are. Most teachers these days are so busy that they are not able to give students much in the way of personal assistance, and they can understand why students look for outside ethical assistance. There are some services on the internet that blatantly offer to help students cheat--bur eNotes is certainly not one of them. The editors who work for eNotes are teachers with high ethical standards and wouldn't be associated with any service that was detrimental to education. If you look up practically any subject on Google, you will usually find links to eNotes right up at the top of the list. It has an excellent reputation and is used for scholarly research in many different branches of study.