Game Environment Modeling and Texturing

Here are some good Tutorials on Game Environment Modeling and Texturing:


http://en.9jcg.com/comm_pages/blog_content-art-200.htm

http://en.9jcg.com/comm_pages/blog_content-art-199.htm

Modeling Stairs:

http://creativeporta.com/index.php/maya/2-modeling-in-maya/21-modeling-the-stair-case