Try the following article (authored by me, published on Forbes) for what is and is not considered a qualified expense:
https://www.forbes.com/forbes/welcome/?toURL=https://www.forbes.com/sites/brianboswell/2016/10/02/what-can-you-spend-your-529-savings-on/
Happy to answer follow-up questions.
Brian Boswell VP, Research & Development
This information does not constitute tax advice and is provided for informational purposes only. Please consult your tax advisor, financial advisor, local taxing authority, and/or plan provider or sponsor for more information.