If you have seen another Google Site and want to do something similar, or think you must be able to do something and just can't find it, let me know and I may be able to write a how to for you. You may even find that someone else has already suggested it, so you can vote on the Google Sites How To suggestion. The more votes the higher the likelihood of me writing it.
Google Moderator also offers the ability comment on the suggestions, so you may find a comment from me saying I've already done that article, or you can find it on another site.
Please make as many how-to suggestions as you like, but there is no guarantee I can do any of them.