Search: When you are at home, Google search engine may not filter as well as when you are at school. Consider using Kiddle.co as your search engine. It is still a Google Search but it is designed as a safe search for students. (Here are other search engines you could use as a student.)
Search: As an older student you may want to ensure you are using a Safe Search. Utilizing Google's "advanced search" you can make your search extremely specific. When using "advanced search" make sure Safe Search is on to filter results.