> 超初心者はキツク
The first part means "extreme beginner". The second part means either "kick" or the adverbial form of "kitsui". I think maybe it's the latter. Therefore my guess is that it means Beginners are a pain. This isn't a complete sentence, by the way.
> 交換の話しは禁止です
Exchanging conversation is not allowed or Back and forth conversation is not allowed.
If these two fragments are part of the same sentence, it would mean Conversation exchange by beginners is not allowed under any circumstances.{/I] (The kitsuku would be equivalent to zettai ni in this case).
> 昨日はほんますいません
I'm really sorry about yesterday.
> 初心者の方も気軽
Beginners should also be cheerful. In other words, Even if you're new, don't worry and have fun.