Hola
On the Norte it can be a bit tricky at times. Especially at the larger towns, where the arrows not always are obvious.
At several cities the albergue/ youth hostel is located at the 'other side' of town, which means that one has to navigate through the city to get there.
I remember Santander as being very hard to get out of, after one gets of the boat. Took me a very long time, due to I tried to 'wing' it.
So, my recommendation would be to always visit the Tourist Information if you see one, or ask for direction and if it is not to far, go there.
They have city maps as well as A4 sheets of the route out of town and to the next destination, the following day.
Also, and this can be hard, once you arrive at a city take your time to be sure that you are going the right direction.
Ask locals. be sure you see the arrow.
Several times I visited 'Amigos de
Camino de Santiago' ( I believe that is what they are called).
It is locals who volunteer to assist pilgrims and they have offices in many towns and cities.
They are very helpful and will assist you with most needs you may have.
Again, it is something Tourist Information, or the hospitalero/a at the Albergue can direct you to.
Finally. Don't worry to much, as most of the way is well marked and other pilgrims will be on route.
Have a great walk!
Buen Camino
Lettinggo