1) 3 column layout
1.1) left column to be for menu for the steps of the tutorial (that could group the steps)
1.2) central column to be for content
1.3) right column for ads
2) on central column ads to be able to be added between paragraphs
3) non tutorial-pages to be without content on left or right columns
4) blocks for home page to stack different sections (like in the image)
Similar to w3school.com. Any good ideas for design can be considered.