In = On Saturday morning, I tutor my student. He is 12 years old and I teach him math. After the class, I usually go to the cafe with my friend and study. When the weather is good, we sometimes go to riverbank riding bicycles. = ride our bicycles to go the river bank. 
On Sunday, I watch movies downloaded illegally = illegally downloaded movies on lab top = in the laptop with my mom, and then I get ready to go to the apartment near the college =  school campus. (I live at the apartment near the college = campus with my sister during the week days because the  college = campus  is too far from home. It takes 2 hours by public transportation.)
Sometimes I play with my friends on weekends too. I went fishing cafe last weekend and I like to go to Lotte World and enjoy the rides.