Due to the needs of communication, we often have to give some presentations. There are many good examples online in the internet. Besides that, I also presented some examples in my blog. For example: How to give an inspiring presentation/speech(1) ,
how to answer questions (2). In this blog, I would like to share some other interesting examples. Since I am also a biginner, I will provide only some general information. For the rest, you can explore further in deepth by yourself.
1. Giving a presentation other than PowerPoint. You can try Prezi (http://prezi.com/,http://en.wikipedia.org/wiki/Prezi). It is free to use. For students or teachers, you'd better register with official working email account so that you can get larger clound storage space. For sure you can also use personal account to register. However, you will get relatively smaller clund storage space.
3. Make a special slide by using Tag Cloud. Information of Tag Cloud see (http://en.wikipedia.org/wiki/Tag_cloud). Here is the example that I made (see above):