Last year my mom had brought me a tablet, that tablet had only last me about four months. My battery had burnt out & my SD card had fallen out. This year she brought me a better tablet. The Arce tablet, I am always on my tablet for Facebook, Twitter, Music, Youtube, Homework etc. My questions are 1. What she I cleaned my tablet with? 2. How long should I be on my tablet? she I give my tablet a break every 20 minutes? 3. what causes a battery to burn out? how to avoid it? 4. How to make sure my SD Card won't fall out? 5. how to avoid SD card getting damaged? I am sorry if my english is bad. please help!