Analog push process is when you take a low speed film and shoot it with much higher speed. I usually use Ilford Hp5 ISO 400 and shoot it at ISO 3200. Push process always means longer development times and bigger grain. On this picture of my dog, the grain is extremely big due to the push process and also because it is a blow-up picture, which means the oryginal picture is much bigger, and this is a big crop of the picture.
Llibreria Sant Jordi is one of the places I have to visit every time I am in Barcelona. I always buy some photo album of spanish classic black and white photographers, and talk a while with the owner of the store. This library also reminds me of Carlos Ruiz Zafón and a library in his books. It is definitely one of my favourite places in Barcelona.