[Reading] How to give a good research talk

This artical gives suggestions about giving a presentation of 30-60 minutes. Because it says that "make what is useful for you, and ignore the rest", I only summarize the parts useful to me.
First, use examples is important. Always remember to illustrate an idea (theorem, definiiton, ...) WITH an example.
Second, treat the more important aspects in more detail than others. Also, don't read your slides, talk ABOUT what's on it.
Last, avoid too much introduction such as previous work. Also, sometimes give outline of your talk is not appropriate.