Before worrying about all the how-to's of groups and starting them, I strongly recommend that you first become familiar with most aspects of this community, as a regular.
By then, you would know how to handle things much better, and opening a group would be much easier. Chances are that most likely, if you opened a group at this point, it would only end up being one of those "come-and-go" groups that last for a couple of weeks or 1-3 months, then disappear.