There are a few different ways that you can create a sidebar in Squarespace. One way is to use the built-in functionality that Squarespace offers. You can do this by going to the Design tab and then selecting the Sidebar option from the list of options.
Another way to create a sidebar is to use HTML and CSS. This is a more advanced approach and requires some coding knowledge. However, if you are comfortable with code, this can be a great way to create a custom sidebar that matches your website’s design.
To style text in HTML, you can use the <p>, <b> and <u> tags. The <p> tag is used for paragraphs, the <b> tag is used for bold text, and the <u> tag is used for underlined text.