Ravi suggested that I should give a stable bloghome to this short .pdf of tips for giving math talks, which I wrote a few years ago for our graduate student conference in number theory. It’s aimed at people giving their very first seminar talks. Readers, please add in comments the advice I forgot to put on the tip sheet!
Update: A reader helpfully points out that I basically already wrote this post, less than a year ago, and linked to the same tip sheet. Sorry! I have a little baby! I’m sleepy and I forget things! Anyway, the link in the old post was dead so at least the repost serves the purpose of making the tipsheet stably available.