Here are places where you’ll find useful links:
Webpages
There are very few deadends on the web. Most pages are linked to several other pages. Click them to move around.
Bookmarks
Links appear in the bookmarks bar across the top of the Safari window and in the Bookmarks menu. Click the open-book icon to see more.
Email messages
People often send links in email messages. Click these only if you trust the source.
Address book
Click a website listed in your address book to go to it directly. (You can also add websites from your address book to your bookmark list.)
Other documents
Documents that aren’t webpages can contain links. Often these links are “live” and you can click them to open webpages. If you see something that looks like a web address but it’s not clickable, try this: Highlight it, open the application’s menu, and choose Services > Open URL. If it’s a valid address, it will open.