Haymarket is the second stop after leaving the Central. The University campus is directly across the road from the Metro and bus stations. See the campus map below . Use the zebra crossing that is next to the bus station. However, you could also use the Metro, which is cheaper.
Trains leave from the south end of the terminal building and they are frequent.
The journey is about 20 minutes. Go to Haymarket and follow the instructions above. If you are staying at a hotel in Jesmond there may be a Metro station fairly close. All drivers know the location of the University but they may need instructions for particular buildings. The Ridley Building is on the corner of Queen Victoria Road and Claremont Road, near the entrance to Exhibition Park.