I am new to web programming and for academic reasons I designed a web page for a teacher, which is a site to host the notes for certain students who study the subject, but he told me that if it was possible to notify the students when make changes to the page, that is, upload notes or report activities or outstanding information, then how could you do it? check on RSS but the students should follow the rss of the content and download readers in case of not having firefox but I would like a simpler way, I thought of some kind of form for subscribers with a database and then send an email to all the destinations, I really do not know which method to use, which suggest me, I do not want to give me code just to guide me ...