class bravo

Hello, I'm having some confusion with overlapping airspaces. If I am flying from the south to kcfo (colorado air and space) where the airspace is from surface up to but not including 8,000 feet, this overlaps the class bravo airspace of KDEN (Denver international) as the bravo shelf starts at...

I got a text around 10:30pm from a guy in our local flight club asking if I could pick him up at Creve Coeur (1H0) in the morning and bring him back to home base (DEC) the following morning. I mean, that's all the excuse I really need...off to a great start. C182 was fueled and ready to go...