I am a violinist. I love it because it is smallest and highest-pitched instrument in the family 
I play the guitar.
Oh wow. that is amazing. I love the way the  sound is projected either acoustically, using a hollow wooden or plastic and wood box or through electrical amplifier and a speaker 
Yes I have been playing all my life.
How do you play it. Is it the regular way of strumming or plucking the strings with the fingers, thumb or fingernails?
I use my thumbs.
Do you bass guitar too. The one that looks like  electric guitar, but with a longer neck and scale length
No, only acoustic guitar.