That seems like a good session to me for starters. There are plenty of varieations to hill training, hill reps being only one of them. You could varry the length of the hill rep, say
3x1min
3x45sec
3x30sec
3x15sec
jog back down recovery.
If it's quite hilly where you are you could do other types of hill training as well, similar to reps you would do on the track but on undulating terrain. 1k; 3k; 5k all at pace.