0 to become familiar with a place and to feel happy and confident in it -- adaptarse
1 to start living in a place where you will stay for a long time, usually with a person you love -- asentarse
3 to start having a calmer life by getting married, buying a house, having children, etc. -- asentarse
We can complete it step by step however long the road is and it can't be completed however short the road is if you don't even mark your footprint.
Podemos completarlo paso a paso, por muy largo que sea el camino, y no se puede completar, por corto que sea el camino, si ni siquiera marcas tu huella.