When browsing web pages it’s more efficient if you open each link into its own tab rather than into its own window or loading it into the window you’re using. It’s easy to do: just hold the ⌘ key while clicking the link. When you do it that way, the linked page loads in the background while you remain on the page you were on. This is especially useful when doing Google searches as you can quickly skim the search results and quickly ⌘-click the items that look promising, without leaving Google. Later, you can click each tab to bring it forward.
Here’s how it looks in Chrome. It’s very similar in Safari and in Firefox.
You might have to visit the preferences for your browser. Look for something like this (Safari’s preferences shown here):
Nothing to it.