1. Consistency is the golden rule of interface design and way finding!
2. Clear Navigation aids are important. Users should always be able to return easily to your home page and to other major navigation points in the site!
3. Users quickly adapt to content navigation within either the left column or far-right column of web pages—just be consistent in how you lay out your navigation on all pages. Left navigation columns are much more common and therefore have an edge in usability because all web users are familiar with them