Quinter is right off I-70. It is hard to miss.
The best way to get around is by car. It's not a very big town - about 1,000 inhabitants - so it's hard to get lost, but if you do, ask local people to help you get around.
If you go and visit the small town of Quinter in Western Kansas, you do have to see Castle Rock. It takes about 20 minutes to get there from town. You have to take country roads which may get bumpy sometimes, so do not take a nice car on this trip. To get better directions where to go ask at the Convenience Xpress or Pizza Station they sure will be happy to help you!
There are a lot of small shops on main street. You can buy groceries, food, souvenir shirts, electronical devices, flowers, etc.
I-70 gets you around. The best way to do so is by car. You can visit cities nearby like WaKeeney, Grainfield, Grinnel, Hays (about 18,000), Salina, etc. Or even Denver, CO.