It is important to know the difference between a web address you type into the address bar and search terms you type into a search box.
The address bar is usually at the top of the screen. When you know the address of a website you want to visit, you type the entire address as one line - no spaces. You don't have to type in www. anymore. It doesn't matter if you capitalize or not. It is important to spell everything correctly or you won't end up where you want to go.
Search boxes allow you to find lists of possible websites. If you look carefully at the screen, you will find a search box (or two). They usually have the word search somewhere nearby. Search boxes can even be within a website so you can search that particular site only, instead of the entire Internet.
Search terms are called keywords. They should not be too broad or too narrow. It takes a little experimentation to discover how to put in search terms for the best results. Searches use spaces between terms. Capitalization still doesn't matter.
With many search engines like Google and Bing, you can narrow your search from the entire Web to images or video. This saves time if all you're looking for is a picture.