There are several different types of code you can use to change the appearance or functionality of your website and several different methods to add the code to Squarespace. These types of changes are called advanced customizations. Most changes can be carried out by simply copying and pasting the right code into the right place, so it's usually just a matter of knowing where to get the code and finding where to put it. While you don't have to be a coding expert to do this, you should ideally have a basic understanding of whatever programming language you are going to use (for example, CSS, HTML, or JavaScript), because Squarespace won't help you if you get stuck.

Although it's true that the Squarespace support teams won't help you with custom code through their chat or email support system, Squarespace does provide online step-by-step...