The Very Basic Twitter Guide

Twitter allows you to post up to 140 Characters (this includes spaces,  for best results and to allow retweets keep under 120 characters)
Each Post is called a Tweet! (This is referred to  as a micro publication)
Mentions – When You want to mention someone we use the “@” and then their name i.e. @dbmei this notifies them that you have tweeted about them. The “@” is telling others that this person or business is significant to you or the subject. It is the primary tool to get action and growth on twitter.
Search – When you want to add a subject or search topic we use a hash tag “#” sign. This would be followed by the subject, place or thing without spaces separating the words. i.e. #sagharbor #iloveyou #realestate (We try to add at least one to each tweet, but never more then 3)
Example of an ideal tweets:

1. I had a great meeting and #lunch with @basilpuglisi today. @BSmiths still has the best lobster in #sagharbor.
2. Check out this wonderful 8 acre estate in #Bridgehampton that I just listed on http://myhamptonhomes.com #realestate
3. Looking forward to seeing @kellybensimon @Jillzarin and my friends @hamptons for the #hamptonsclassic this weekend

Retweet – The action of repeating what someone else said because you agree or support them.
Retweets are second to mentions for quality of networking, however repeating someone else to your network is considered important should you want someone else to do the same. You want to have celebrities or influencers retweet for you if you have a call to action tweet.
Messages – aka Direct Messages are private tweets sent directly to and only to the person you have chosen. It is not searchable and private so there is no need for @ or # but links are still great.
Follow – You can follow anyone you can find, you will see their tweets in your stream, only you see their tweets. Others only see your tweets if they follow you, search you or a subject you have used # or a keyword. You public tweets may also popup in search engines.
Pictures – Add pictures to twitter by selecting the picture icon on the web version or attach on mobile versions (phones and tablets). These pictures now show up as recent in your profile view on the right.
Links – Any link in twitter may be shortened by twitter and show up as a t.co/whatever, you can avoid this by using a third party app or tweet deck.