This is confusing because Firefox is always free and there is no product from Mozilla named "Firefox 2015". Can you track down where you got it from so we can get a better idea of how to address your situation?

Okay. I am confusing AVG with Firefox. However, I still need to know the rest of what I asked. Does Firefox include a Browser or must I choose one from outside Firefox such as Bing, Google, etc.?

Firefox doesn't have a "search engine". Depending upon which country you reside in, Firefox supplies a variety of search engines by default with your localized version of Firefox.

You can install any search engines you want from a variety of places. The official Mozilla Add-ons website has search engines available for installation - https://addons.mozilla.org/en-US/firefox/search-tools/ - or you can get search engines here - http://mycroftproject.com/ - which a website that was recently spun off from MozDev.org which hosts many projects related to Mozilla products and is hosted by Mozilla.

Firefox may automatically discover some AVG Add-ons. To check whether those are enabled, or to enable/disable them, you can use Firefox's Add-ons page. Either:

• Ctrl+Shift+a
• "3-bar" menu button (or Tools menu) > Add-ons

In the left column, check the Extensions and Plugins categories. You may also find Options buttons for them to tweak their features.

Chasdj said

Okay. I am confusing AVG with Firefox. However, I still need to know the rest of what I asked. Does Firefox include a Browser or must I choose one from outside Firefox such as Bing, Google, etc.?

Firefox itself is a web browser as Bing, Google you see in Firefox are search engines in the Search Bar.