I recommend reading these short pages in the order they are given below.
Essentials of a Google search.
Google cheat sheet to help with your searches.
Google Advanced Search.
The last 2 links should help you in reducing the number of useless returns on a search.
Microsoft's Live Search
You may be able to make a very forceful presentation with Gapminder. It's link is on the sidebar.
Read Doug Forrester's comments on what makes a good PowerPoint presentation. You may have to scroll down a bit.
On the sidebar you will also find a link to the APA Style Guide.
If you're having trouble deciding on a topic, try this site for ideas: Noodle Tools.
