Step 1
Select the text you want to change, click the current font on the right, hover over the font to preview it in place and click it to change your text font.

Step 2
If you want to use your own font, it needs to be a TTF file
(it should have a file extension of .ttf, e.g. AmaticSC-Regular.ttf)

Click the current font on the right, then click the Upload button

Browse and select your font. Once the font is uploaded, it will appear under My Fonts. Select the font to apply it to your text.