3 Main rotas, Blue, Minibus and Main. 

New starter would begin on blue rota which at Percy Main is quite boring since all the nexus work was lost so it is basically only the 19 and occasionally the 434.

Minibus would include the 11, 41/a, 42/a and sunday and evenings 18

Main rota is 309,310,311 and 1

There are also various other side rotas for scholars, split shifts, 4 day, dfds etc

Expect to be on Blue for quite a while though, probably at least a few years before you go to minibus and then the same to the main rota. But if you know the other routes you could potentially pick up OT on them if available.

Dm me if you want to know anything else