There are many websites which provide free templates, You can download and install into your blog or site. Free template also available for different-2 types of sites, you have to select your site type and download the desire template.
A XML file will be shown into download template, Just copy that XML file and paste into another folder then install into your site.
You can take help using the downloaded template where a folder of - how to install template.
Following are the websites which provide Free Template-