You should use inform of when you are referring to one person being told information from another person. You should use inform on when we are given evidence or telling someone information about illegal activity. 'Information on' is used when referring to details or data about a particular topic, while 'information of' is used when indicating possession or relationship between the information and something else. The meaning of INFORMATION is knowledge gained from investigation, study, or instruction. How to use information in a sentence. (Definition of information about something/doing something from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press) “Information On” indicates what is the subject or topic the information that’s being brought (or is being sought) is about. It’s a synonym of “Information About”, which sounds a bit more formal or polished. “Information Of” usually indicates a fact about the information that’s being provided. Information is an abstract concept that refers to something which has the power to inform. At the most fundamental level, it pertains to the interpretation (perhaps formally) of that which may be sensed, or their abstractions. Many English learners find choosing the right preposition challenging. When it comes to the verb “inform,” the correct preposition is about. You use “inform” with “about” when you want to tell someone facts or information. For example, “The teacher informed the students about the test schedule.” On has the meaning of 'covering' here, as in : Dealing with the subject of, about, or concerning something. Information on something would be information that is really in-depth, and quite into details. i.e. A study on history, or A book on biomedicine. Both words “on” and “about” are correct prepositions to use with “information.” There really isn’t a difference between them in terms of meaning or attending to correct grammatical usage. There's one more word that often goes with information: regarding. This is the formal counterpart to on/about, which goes in pair with of and is about the content of the information.