As you searched for answers to some of your questions, you probably found that some answers were easy to find, while others were much more difficult. With access to the internet, we have more information available to us than anyone has ever had before. That can be a wonderful thing, but it can also mean that the bit of information you want is buried in a sea of other stuff. When a search returns several million pages, it can be a bit overwhelming.
Luckily, there are some search techniques you can use to make your search much more effective. The actual commands vary from one search engine to another, but all of the major searches have an advanced search page which will show you which to use.
One of the first things you may want to do is turn on SafeSearch. On the main Google page, you will find the "Settings" link on the bottom, right hand corner. Click that, and select Search Settings. The first thing you will see is the option to turn on SafeSearch filters. This will try to block violent or inappropriate pages and images. Since these pages sometimes have long lists of random keywords, they show up in many searches. Turning this feature on can filter most of them out.