Guerda,
Yes, I'm writing an article right now and found this resource of characteristics of successful online learners.
Characteristics of successful online learners (listed in no particular order) include:
1. being open minded about sharing personal and professional experiences online;
2. having good written communication skills;
3. using proactive communication;
4. being self-motivated and self-disciplined;
5. having a commitment to learning;
6. having critical thinking and decision making skills;
7. believing there is quality learning taking place in an online environment; and
8. being spontaneous.
(Illinois Online Network, 2010).