RTFM is an acronym for "Read The F***ing Manual". This is a standard response in many technical fields (including broadcast journalism) to questions about basic operations of a new piece of equipment. It is not an insult (well, not always), but simply a reminder that good professional practice is to read the manuals for the equipment your job depends on.
If you make a habit of reading (and remembering) the manuals, you will find the technical parts of your work go more quickly and smoothly, and you will be a more valuable asset to your organization.
