Keyboard shortcuts for Mozilla Fiirefox

For people who prefer to use keyboard rather than mouse, below are some shortcuts for most common actions while using Firefox web browser.

Open new tab	Ctrl -T
Close tab	Ctrl - W
Open history	Ctrl - H
Open Downloads windows	Ctrl -J
Bookmark current opened page	Ctrl - D
Open New window	Ctrl - N
Close Window	Ctrl - W
Zoom in/Increase font size	Ctrl  +
Zoom out/decrease font size	Ctrl  -
Clear Private data(cache/form data/ search data/ History/saved passwords)	Ctrl - Shift - Delete