Changing font

Hi, this is very basic as I haven’t really messed around with wordpress yet…

I’m trying to change the font of some text on one of my pages but am not sure how to do it.. I’ve changed the colour of the text in much the same way as you would in a word document, but there doesn’t appear to be an icon for changing font so I can just highlight the text and change it?

Any help would be much appreciated… Thank you ??