Hello. I am really very fond of PF. It is a fantastic forum and I am very glad that there is help available for people who sincerely wish to learn. I have a small quiry. I sometimes post a question and I do not get a response. I am seriously trying to cover Halmos's Naive Set Theory and I get struck at times. I just cannot proceed further without clarification. I completely understand that PF is not like a classroom where the professor is obligated to answer all the questions of the student. It is really more of educational charity; however, I want to do everything I can to get my doubts cleared. The question is the following. Is there anything I can do to get the wise people on this forum to help me out? For example I have posted a question on functions and its inverses. I haven't heard from anyone yet. Also, I had posted one on commutativity and associativity of sets and I got a response after I personally requested one of the members to help me out and also after I reposted the question which I now understand is illegal. Please suggest me ways to get people to help me out when I ask questions. I'd greatly appreciate your feedback.