Although I've had some success studying alone, having other students study with me has often driven me to learn faster. Other students create opportunities for communication, and we can learn from their experiences, too. A bit of competition can also be motivating.
Most of the online resources I have used address a solitary learner. This evening, though, I watched the first episode of "Let's Speak Korean", a television series featuring a Korean teacher, an American mediator and two international students learning Korean for the first time. Having "classmates" was a different experience, and it might be more suitable for some learners.
Each episode includes an introduction and cultural discussion, some useful phrases and a dialogue. There is supportive text, but it is only in Hangul! What is useful is to listen to the students and note feedback on their performance. Since there is no feedback when learning in isolation, this can be quite useful.
No language learning resource is perfect in itself, and supplementation is always enriching. A series like this can give learners who like to learn with classmates a more social learning experience.
What I found even more intriguing than the video itself was the discussion between viewers that it provoked. The viewers share their opinions and reasons for learning Korean, ask for help with thier learning and become a virtual classroom of sorts in their own right. A support network like this can be of great help to learners, and it is something I would like to look into further.