Physics Talk by an Undergraduate Student -- Preparation
The slides you linked to are using the Beamer LaTeX class, specifically that looks like the Copenhagen theme without a table of contents.  Beamer makes beautiful slide shows that will take you at least three times longer to make than Power Point, more if you're including images or other formatting beyond bullet points and text, or have never used it.

Personally I tend to use it for everything and then complain about how much less time I could have spent on it if I had used PowerPoint.  Pick what works for you.

My general advice when it comes to mathematical formulas in slide presentations is to exclude everything possible.  I find even when I am familiar with the research, it's very hard to parse a formula on the fly, while it's up on a projector for 60 seconds.  Obviously if it's crucial then your audience will just have to cope, but always try to use narrative or images or other easy-to-consume-on-the-fly formats to make your point where possible.  If the audience is interested then they'll get your paper and study it to understand all the equations.

The other important universal rule to presenting like this is that you will take up way more time than you expected.  Practice is good, but regardless, lean toward less material and slower, more detailed discussion of it than trying to cram in tons.  Remember that you don't have to make every point of your research in one presentation.  Present enough to convey the broad idea to everyone, and convince those so inclined to read your paper where they'll learn the rest.