Vulcans

Vulcans history.
Vulcans were once a vicious race much like the Klingons. they had very deep emotion and could become so mad they would even kill there friends. a Vulcan philosopher, scientist and logician called surak did not like the way Vulcans behaved so he decided to convince the Vulcans to suppress all emotion and become governed by logic , this was called the time of awakening. the Vulcans decided he was right and suppressed all emotion they called it kolanair. the Vulcans that did not like this left and settled on Romulus and Remus they became Romulans.

diet.
Vulcans are vegetarians by choice as they don't believe it is right to kill when you don't have to. Vulcans do not drink alcohol even though this is not certain as spock drinks alcohol in some episodes, Vulcans can not get drunk anyway.

candy and sweets have the same affect on Vulcans as too much alcohol does on humans, as spock sais in star trek IV the voyage home.

mind melts and telepathy.
Many Vulcans are telepaths. They have been observed taking part in several telepathy-related actions and rituals, including an instance in the Season 2 episode "The Immunity Syndrome" where Commander Spock was telepathically aware of the simultaneous deaths of 400 other Vulcans on a faraway ship whose crew was entirely Vulcan.

Vulcan mind melts are a way of reading others mind or letting them read yours. Vulcans touch peoples head if they want to mind melt spock and other Vulcans have been seen doing this on multiple occasions for instance in star trek III the search for spock Sarek mind melts with kirk to show him that spocks soul is still alive. also if a Vulcan mind melts before death they can come back to life this is called katra which spock uses to come back alive.

Vulcan names.
Vulcan first names are unpronounceable to humans which is why they call spock, spock and not S'chn T'gai which is said to be his first name. most Vulcan names do start with an s like spock, surak, surok, also a lot of Vulcan names start with a t` like t`pol and T'mar.