For example, some discussion areas, like the InfoTech Clinics, Current Affairs Lounge, Hobby areas and more, require a standard of English that will be easily understood by old, new, casual and even non-members alike. Other sub-forums have developed their own particular style of language which might not be easily grasped by new users.
However, sticky (pinned) threads may be present to introduce new users to the guidelines, culture, and (in some cases) frequently-used lingo and acronyms.
Kindly refer to sticky threads, if any, for helpful posting guidelines.
A short but very helpful video on forum etiquette can be found at: http://www.albinoblacksheep.com/flash/posting