Investigate how search engines work

1. Different types of search engines

1.1. Web crawlers

1.2. Directories

1.3. Hybrid

1.4. Meta search engines

2. How search engines work

2.1. Methods for website registration with search engine databases

2.2. Methods used to rank websites

2.3. The use of keywords in the title and meta tags

2.4. Position on the webpage to return results

2.5. How search engines ignore keywords

3. Use of search engines

3.1. Simple

3.1.1. Keywords

3.1.2. Quotes

3.2. Advanced

3.2.1. Boolean operators

3.2.2. +/- search

3.2.3. Wildcards

3.2.4. Advanced search pages/options