I'm just learning guitar, and I often want coaching between lessons. I use Ultimate Guitar and Tabs Pro on my iPad to try and learn songs that I like. When I'm sitting on the couch, I use the Spider Monkey to get my screen to eye level. This helps me see the tabs better and improves my posture. I also sit at a chair by my dining room table sometimes and use the Octa stand on my tablet there. It also helps sitting at a table to add the extra height.