Here is a video playlist from Native Instruments containing some great tutorials with Ean Golden showing you some advanced performance tricks to get the most out of the Traktor Pro effects suite with your Traktor Kontrol X1. Content includes:
Note that if you just let the videos play, the player will automatically skip to the next video in the playlist in the order detailed above. If you want to skip to a specific video, click the Playlist button at the bottom of the player (see picture below). Alternatively, you can click the YouTube button at the bottom of the player to open the playlist at youtube.com.