The iPhone’s built-in web browser Safari is the best mobile browser I’ve ever used and I suspect that it will be getting a lot of use from new iPhone users. Adding a bookmark for an interesting or important website is a fundamental browser operation which is easily done on the iPhone.
Within Safari, you can add a bookmark for the current page by tapping the plus symbol next to the address bar at the top of the page.
The Add Bookmark page will slide up allowing you to change the name of the bookmark and to optionally organize the bookmark into a folder.
The default bookmark name is the title of the webpage. If this is not to your liking, you can use the keyboard to change it.
To change the location of the bookmark, tap the Bookmarks button just above the keyboard and a list of bookmark folders will slide over. Scroll through the list and tap the folder in which you’d like to stash the bookmark.
When you have things the way you want them, tap the Save button.
You cannot create new bookmark folders here, but the iPhone makes it easy to create new bookmark folders.