Harvard Business Review (HBR), a well-known and highly respected business publication offers a digital product, HBR Ascend. It is a mobile-friendly web site, targeted for young professionals. It offers short articles, classified into six sections viz. Managing Your Career, Managing Your Work, Working with Others, Managing people, Thinking like a Leader, and Communicating. HBR Ascend has identified these six skills as essential skills for young professionals and the articles are meant to improve these skills.
A link to each article on the site also mentions the time it would take to read that article. The time typically ranges from 3 minutes to 7 minutes. So you can access this site to learn something new whenever you get some free time to access your smart phone.
The link to this learning resource is http://bit.ly/vnl0002.