There are several popular web browsers, but all of them tend to work about the same way. If you have learned to use one, you can use any of them.
Toolbar Functions
A major part of the UI (user interface) for a browser is the tool bar. This appears at the top of the browser window, above the viewing pane and it can perform a number of critical functions.
Back
This takes you one-step back in your history, to the page you were on before the current page. This works great when you are browsing content pages, but be careful, it is usually not a good idea to use the back button when you are in a web app or after submitting a form. Especially, don’t use the back button when you are in the checkout process of an online store, or any other time when you are approving a transaction. It can cause problems and bugs, sometimes — such as having the form or transaction submitted more than once.
Forward
The forward button is grayed-out (disabled) most of the time, but it becomes available if you have used the Back button. It allows you to move forward through your history, to where you were before you used the Back button.
Address Bar
This is a text-box that displays the URL of the current page (or the page that is in the process of loading).
To the left of the address bar there is often an icon that indicates what type of browsing you are currently doing. This icon is referred to as the access icon. For example, the access icon might display a small Globe icon for regular WWW browsing, or a green padlock for secure (HTTPS) browsing. Most of the time, you can ignore this. But if the access icon is red, that usually means there is some kind of problem which you should stop and pay attention to.
Stop
This will be found either just inside the Address bar or just next to it. It only appears when the page is currently in the process of loading. If you click it, the page will stop loading.
If you have already submitted a form or a transaction, hitting Stop will usually not stop the submission or transaction. This is because it only stops the page from loading — the transmission from you to the server that triggered the submission or transaction has already occurred. Therefore do not use the stop button for this, as it will cause problems.
Refresh
The Refresh or Reload button looks like a circular arrow. It is usually in the same place as the Stop button, and appears instead of the stop button whenever a page is not currently loading. The refresh button repeats the request that led to the current page, which usually cause the same page to load into the browser again. It is most often used to get new content on pages that update frequently. It is also used sometimes when a page loads incorrectly.
If the last thing you did was submit a form or approve a transaction, clicking the Refresh button can cause that action to be duplicated. So be careful.
Bookmark Star
Most browsers have a star icon in the address bar, usually to the right of the address bar. This allows you to “bookmark” the URL, saving it to you browser. It doesn’t save the page contents, just the URL itself. This allows you to revisit the page later.
Apps and Plugins
If you are using a browser that has add-ons or plugins (mostly Firefox and Chrome), the icons that allow you to access these features are usually in the toolbar, to the right of the address bar.