A few tips for searching basic Google:
Use just a few keywords -- don't type in long questions -- Google doesn't understand them! One word, maybe two words -- think carefully before using more than three.
To search for an exact phrase, use speech marks or quotation marks, e.g., if you want to search for information about Aboriginal Australian mythology, enter "the dreaming" in quotation marks -- so Google will know you want to keep the two words together.
The site operator allows you to limit search results to one type of webpage, e.g., site:edu brings up only educational websites, while site:sg brings up only websites in Singapore.
See Google's Cheat Sheet for more searching tips.
You can also take advantage of Google's advanced search options.