software usability and navigation

Using your favorite search engine, perform a web search on the terms "software usability and navigation".

In a written report, first provide a definition for usability. Describe at least three or four methods or principles for achieving good design and effective navigation for screens in a software application or website. 

Apply and compare how usability factors affect your own enjoyment and ability to learn and use a specific type of computer software or website. Be sure to fully explain the principles that you studied in paragraph form; do not provide just a list or outline. 

Remember to cite your source(s) fully and completely as part of your paper. Your assignment should be at least one to two pages in length.