The documentation explains how to install the web part and how to set its properties.

Installation
1. Set up a managed metadata service and a list/document library with taxonomy column - Setting managed metadata service and creating taxonomy columns for libraries and lists is beyond the scope of this documentation.

2. Install - If you choose to downlod the WSP (SharePoint solution file)* simply install in your favourite installation style (PowerShell, STSADM command, etc.). If you choose to download the Visual Stusio solution, open the solution, right click on the Deployment Project and choose "Deploy"

3. Activate the feature - In your site collection settings, under "Site Collection Features", Find the Featuere named "Taxonomy Breadcrumb" and activate.

4. Insert the web part to your page - edit your web page (Wiki page with taxonomy column , list item view or edit page, document set welcome page, etc.), and insert the "Taxonomy Breadcrumb" web part (under the "Custom" group)

5. Edit the web part properties - Set the web part properties to match your requirements:

• Choose column - Select the managed metadata column from which the webpart will read the term.
• Term CSS Class - Name a css class for each term inside the breadcrumb.
• Wrapper Div CSS Class - Name a css class for the overall wrapper div (an html DIV element which contains the breadcrumb).
• Seperator String - A string which will be used to seperate each term. This string will be displayed between each two successor terms.
• Seperator CSS Class - Name a css class for the seperator string.
• LCID - The language (locale id) of the terms. Managed metadata service allows to provide translation for each term in multiple languages. If you wish to display the breadcrumb with a tranlsation to specific language - name the locale id of the desired language.
• Action URL - The url that the user will be redirected to when she clicks on a term.