Almost every community has rules and guidelines. Often these are buried in terms of use pages that users click through to register, or are shoved in a link in the footer of the page. These guidelines form an important part of the community and how members are expected to behave, yet they are wordy and hidden more often than not.
In some communities, not understanding the guidelines can have consquences. As an example, on the Stack Exchange network, questions can be down voted and closed. Repeat this a few times and the user can't ask new questions. From the community's perspective a troublemaker has been dealt with. From the new user's perspective, this community is stuck up and unwilling to help the new guy.
How can new members be encouraged to read (or at least skim) these guidelines prior to jumping in feet first?