Don't hope people will magically hear about the community, go find some people and tell them about it.
Don't hope visitors will magically decide to join, give them something to do that's worth registering for.
Don't hope newcomers will magically have questions to ask, or the courage to ask them, tell them what questions they might ask and give them a safe place to ask them.
Don't hope participants will magically become regulars, give them something unique to work on and introduce them to members in a similar position.
Don't hope regulars will magically volunteer, ask them to do something that they're good at.