How can I create a custom landing page for a specific taxonomy term?
To display only node content with a specific taxonomy term checked, add Content: Has taxonomy term to the Filter Criteria of your view. Once you add the filter, you will be prompted to select your taxonomy term vocabulary as well as the term you wish to filter your view by. Once completed, you will only see content associated with the desired term.

If you're using Panels, as your post's tags indicate, you can create your landing page using Pages (comes with panels). Make sure the view you create is a block, not a page, and it will be easy to plug into any panel.