DHound (rescue greyhound) came with a crate.
Like you I had dog experience but had never crated a dog.
I am a total convert 
His crate was his sanctuary, his safe place, somewhere to retreat to when it all got a bit too much for him (we have a busy house, 4 kids etc).
A crate should be a place the dog likes, never used for punishment, alway pleasant, so needs a comfy bed, we had a blanket over the top to make it more den-like, a chew tow/rawhide bone in there and I used to throw treats in at random times for him to find, and a water bowl.
Kids were under strict instruction not to bother him when he was in his crate and NOT to play in it (him being a large dog the crate is bloody enormous and DS4(6) was all for using it as a play house
)
At night he takes himself away to this crate between 9 and 10pm and looks at us disapprovingly is the TV is too loud...
There has been no chewing, no unhappiness, he can be left alone and at night we know he's not on the sofa (this is Very Important to DH).