Thread: How to move the sidebar, rearrange categories, and spread out the header menu?

How to move the sidebar, rearrange categories, and spread out the header menu?

Hi, I'd like to know how to do the following:

1. Move the Main Sidebar to the left side of the webpage
2. Spread out the Header Menu items evenly across the width of the webpage
3. Align the Categorie menu on the front page with the Header Menu selections

I've attached a picture giving an idea.

Thank You