Beginner resources
Inspiration
Combo movie with all characters
TORNADO - A GNT4/GNT4Remix Combo Video
Guides for Improvement
Air Throw Points (Only Kabuto, Kakashi, Kiba, Kimimaro, Naruto, and OTK can air throw)
Using j.B's in Your Combos (Check video description for list of combos)
Using j.B's in Your Combos Add-On
Things to Remember

on most characters is a reversal move, which you can use if you know your opponent is blindly attacking you. It can either be a counter stance, which will hurt the opponent if attacked but can be grabbed during or attacked after the stance, or a move that has relatively slow startup but also super armor.

is a universal combo into super.- If your opponent keeps throwing you, you can avoid it by pressing
,
or
when you expect them to grab you.