Do I have to dive to perform the flight?
No, you don’t have to jump nor dive since the wind takes us up.
Can I fly if I feel vertigo?
Yes, you can. When you take off the vertigo disappears as you lose reference from the ground.
How is the bump when you land?
There is no bump. You only have to take some steps to stop.
Can I get dizzy?
It is not very probable, if you don’t usually feel motion sickness, you won’t so when paragliding eventhough it is not recommended to eat or drink excessively right before the flight.