I pk the whole internets ^^
All Sciences, esp Chemistry. Foreign Languages, drawing, writing, MMO's, studying human Behavior etc
"Even places that have been shrouded in darkness for billions of years can be illuminated. Even a stone from the bottom of a river can be used to produce fire. Our present sufferings, no matter how dark, have certainly not continued for billions of years-nor will they linger forever. The sun will definitely rise. In fact, its ascent has already begun." ~President Ikeda