Start Again from with a New Template

Hi, very new to Square Space and I started a website using a template, but now I'm not happy with it and want to start again with another template. How can I do this on the same subscription? 

You can't really do that with the latest version of Squarespace, but there shouldn't be too much need since the "templates" are not about functionality just a starting point for colours, fonts, and layout. These are all easily changeable to new colours, fonts (colour themes can also each be reset), and "template" pages are all accessible when adding a new page by selecting Page Layouts.