User blog:Kevineee/Please tell me how to make walkthroughs

Okay I didnt know where else to go but I really want to do a walkthrough of nintendo games wii/3ds/ds and wii u when its released but I dont have any idea how to record my consoles well, I see people like chugaaconroy making lets plays of games with a perfect picture of the game like your looking at the tv and I want to do my walkthroughs like that can someone please tell me how to get that kind of quality? mainly in wii games please.