Sport Button: depends on the packs or features thd car has. If it has Sports Chrono, it'll sharpen throttle response. On a PDK equipped car gear shifts are sharper, on a Turbo, you get a slightly improved turbo boost.
On a standard Carrera it applies a engine remapp to give improved throttle response
One on the left looking like a spoiler, will raise and lower the rear spoiler
the next one is for PASM - Porsche Active Suspension Management- adjusts the suspension
The last one PSM on the right is for Porsche stability management - essentially traction control