I would like to recommend a reading on Personal Learning Networks, which focuses on factors that influence online learning and how the learners perceive that process.
It is an article in the academic journal Educational Technology & Society, 16 (3), 59–75. The article is called «Goals, Motivation for, and Outcomes of Personal Learning through Networks: Results of a Tweetstorm». It can be found on proquest.com
The article «reports findings of a study that examined factors impacting professional learning through networks. A personal learning network identification session and a brainstorm via Twitter (Tweetstorm) regarding goals, motivational factors and outcomes of learning through networks were conducted. The article concludes that seven factors play a pivotal role in professional learning through networks: sharing, motivation, perceived value of the network, feedback, personal learning, trust and support, peer characteristics and peer value. Also, different perspectives, motivation, social media and collaboration, reciprocity, intrinsic motivation, innovation, status and reputation and networking strategies play an important role in motivation».