Sorry about the rant but, can you get your PPL in Finland by not going thoroughly through all the required subjects, passing all the tests and performing well in your flight checks? No, right?
What makes you think that Spain is any different? Oxford books are long and hard, that is what they are for, to make sure you won't find a nutcase flying opposite you on downwind in a visual patter on a Sunday morning, or to avoid light aircrafts invading Barajas' airport TMA.
Study hard and be safe. For your and the others around you.