You'd also find 1000's of different sub-topics they are interested in at the time. One person is interested in learning more on the -chatta ending, another might want to learn hiragana . One person might be interested in the polite form, another might want to learn Pokemon words so they can play Pokemon Gold . JIP will eventually cover all these areas. However, since it may be a while before some of them are covered, we recommend that you find other places to learn as well.
People are quick to respond to a post, and keep a conversation going.
I would recommend that you think of the grammar item you're the least sure about - and ask a question about it. For one thing, the feedback is valuable for the success of JIP . It can then be determined what should be covered in more detail. For another thing, almost every message posted so far has been answered at least once. Also, if you've been following JIP for a while, you may want to review the words you've been given so far.