Also, to add remember Role Playing is about being creative, which means putting a lot of thought into what you say. Doing nothing but three word posts is not a good way to Role Play. For example, say you were describing someone:

Bad Way:
"Oh he is big and dark with dark hair and brown shirt."

Better Way:
"The man you are referring to is quite large and has a dark complexion. He has black long hair and wears a tan shirt."

Best Way:
"The gentleman you inquire about is robust in nature and tan in appearance. He has wavy black hair that goes down to his shoulders and can be seen sporting a tan tunic much of the time."

It makes the whole experience more enjoyable for everyone and with practice anyone can do it.