WS.
To capture stars, first thing to see is if there are actually a lot of stars compared to normal nights and no moon.
Use your camera in manual
Set ISO 1600 or 3200 (depending)
Lens on highest aperture
Shutter on 15 sec or more
Any lens can be used provided it's a bit wide. a 50mm on Fullframe works fine as well. - Practice is the key