Exactly, depending on which coven you join you can benefit from any of several pros to being in a coven here.
You can benefit from stoney suggested, the forums for covens usually go into more detailed, ongoing lessons as they allow better organization.
Another great quality of certain covens is that they have specific programs to further assist their members in learning. This can come in the form of required basics, and classes, councilor mentorship, etc...
With these online covens some of them actually provide their own online schools with guarranteed acceptance to existing members. This is a popular upside that attracts many members to larger, well-established covens.
Something else you could receive from specific covens is what they like to refer to as a family-like feel to the coven. The members get to know each other, they support each other, they listen to one another, and they help each other learn.
If you're lucky you can get all of this in just one coven, and very possibly more, the covens here are really just to help you, for the most part. I do warn you that finding the "right" coven can sometimes be a challenge, so if you do decide to join, happy searching. ^_^