I am a graduate student in mathematics, writing my own notes in my spare time on a topic I'm interested in. I find it helps me understand things if I write things out in the style of lecture notes (although to be clear I haven't taken a course in this topic). These notes consist of information from a huge variety of sources, including books, math.stackexchange, wikipedia etc. and since it is for my personal understanding I haven't been citing anything.
There is a chance, however, that I would like to upload these notes on my webpage for anyone who may find them useful. Is it acceptable to only include a paragraph at the beginning saying that none of the following is my own work, written purely for personal benefit and taken from a variety of sources, without citing anything specifically? Obviously there is a huge difference here to plagiarising work that would be considered for publication somewhere 'official', but would it still be considered unacceptable practice?
Thanks in advance.