A lot have been said about creating a logo and favicon. However, here I will be showing a step by step guild for WordPress users. For Blogspot users check here
However, the theme illustration for this tutorial is the vantage theme
— STEP ONE —
Log on to your WordPress.org dashboard (check out the difference between wordpress.com and wordpress.org here) and click on appearance after which your click on customization
— STEP TWO —
Click on theme setting
— STEP THREE —
Click on logo option
— STEP FOUR —
Upload your desired logo and upload it.
Now, for your favorite icon known as favicon which serves as your site identity.
— STEP FIVE —
Still on customization. Click on site identity
— STEP SIX —
Upload your desired favicon with file size 150 by 150. And you are done