This paper is a translation of the the following paper into Persian: [Bryna Kra, Giving a Talk, Notices of the American Mathematical Society, 60 no. 2 (2013) 242-244.]
No one likes to sit through a bad talk, but unfor-tunately everyone does it much too frequently. No one sets out to give a bad talk, but probably all of us have done so. Paul Halmos [P. R. Halmos, How to Talk Mathematics, Notices Amer. Math. Soc., 21 (1974) 155-158.] wrote a beautiful article on how to give a talk, and his advice remains apt today (and some of it is repeated here). But new technology, varying audiences, and different venues force modifications in how we give talks. This is subjective advice on how to give a good talk and, especially, how to avoid giving a bad talk. Of course, not all of it applies to everyone or to every situation, but my hope is that anyone reading this article is provoked into thinking a bit more when preparing a talk.
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