Cherry trees

I am about to plant three cherry trees, 2 Bing and a semi dwarf pollinator.  How far apart should I plant them and any other knowledge I should know as this is my first time with cherry trees,     THANKS

Bing cherries get big, so I'd give them at least 20-25 feet apart if you can. They're not self-fertile so the pollinator is essential, and it needs to be within about 50 feet to do its job properly. One thing worth knowing early on is that cherries really don't like wet feet, so if your soil holds water at all it's worth planting on a slight mound or raised area. They'll reward you for it.