This is a great talk about giving a great research talk, by Simon Peyton-Jones. (He has another great talk about writing great papers) I'm sure you'll get a lot from it if you haven't seen it. So much wisdom, and common sense that seems obvious but you mightn't think of or remember half of it. Good luck!
How to Give a Great Research Talk https://www.youtube.com/watch?v=sT_-owjKIbA
About talking about yourself - I really like when people show a slide about themselves and talk briefly, for maybe 10-20 seconds, about what they've been involved in previously. So you can hear where they're coming from, and where their expertise lies. Especially if not many people there are likely to know anything about them.
