Bus stops in front of the station. I think this means bus station. Follow the yellow stickers.
Departure time 8:51 gives the travel planner 3 options, via Utrecht CS (route with least transfer without surcharge), via Zwolle, Hertogenbosch (fastest route) and via Schiphol (least transfer, but train with surcharge). You can choose which route you take.
There is a technical error in the journey planner, which means it is not possible to buy a ticket if an NS bus has to be driven.
Train ticket is valid on NS bus.
The price is €29.40 one way. You can travel unlimitedly in the Netherlands during the weekend for a month for €34.95 with a subscription https://www.ns.nl/abonnementen/weekend-vrij. This is cheaper than a return.
Can be canceled daily after 1 month.
If you prefer to travel without a subscription, you can check in and check out with your credit or debit card https://www.ovpay.nl/en or buy a ticket from a machine at the station.
For this trip you must check in at the yellow gate or pole with the NS logo.