The shelf in the first picture is made of red oak plywood. You can choose the wood type, color and design as you like for your project. In case if you need more help understanding this project, you can refer the source link below. It discusses various items used, steps and tips and personal experience of the author who personally built a Zigzag shelf.
Building a Wooden Office Desk Organizer is an easy task for a professional woodworker, but not so much for normal people like you and me. But that doesn’t mean you cannot do this. Two years ago, I had almost no woodworking experience, but now I make most of my household and office wooden items by myself. This saves me a lot of money. And believe me when I say this; you can also manage to make wonderful wood items with a little practice and some woodworking experience.
Working on wood based on wood plans is great fun. However, many times, the enthusiastic beginner is faced with so-called woodworker-block. On what to work, exactly? Indeed, it can be quite difficult to start a project without the proper guideline. We scoured the web in search of good websites that offer free woodworking plans for beginners. They are excellent guidelines to help you work on a project from start to finish.
Mate, I started watching you after seeing a kerf cutting dado jig out of a drywall screw and a few pieces of scrape. You have gone from strength to strength. Each project bigger and better. But not unachievable to the average home woodworker. Keep up the good work. Your Scetchup tutorials are so easy to follow. I have learnt heaps watching you. Now a year after your big move your going strong. Thank you Jay