So at the end of this month I am thinking of getting my first tablet, I need to know a few things. 1: Is the os upgradable on these tablets? and what is the most recent version? 2: Whats a good model to get with a 400-500 canadian dollar budget? I think it needs wifi if I was to use my router to let it connect to it am I right? 3: How is the web browsing? what can it do? does it have adblock plus? I think I heard there is firefox for android.. how is that? 4: if my router has wifi, can I just set the tablet up to use that connection without any extra charges with my isp? Kinda the same way you can a laptop etc? 5: Any reccomended apps or games for it? 6: Any tips for general care with these? what can I clean the screen with? etc. 7: Can it be used at home keeping it plugged in the power adapter and have it use that instead of the battery? It will be used at home alot so, less wear and tear on the battery is good. Thanks for any and all answers.