From Shoryuken Wiki, Marvel vs. Capcom 3 Strategy and More!

Contents 1 Introduction 2 Moves List 2.1 Normal Moves 2.2 Special Moves 2.3 Super Moves 3 The Basics 4 Advanced Strategy 5 Match-ups

Introduction

Moves List

Normal Moves

Special Moves

Hadouken - QCF + P
Shoryuken - F, D, DF + P
Tatsumaki Senpuukyaku - QCB + K

Super Moves

Shoryu Reppa - QCF, QCF + P
Shinryuken - QCF, QCF + K
Shippu Jinrai Kyaku - QCB, QCB + K (Lv.3 or MAX)

The Basics

 In N Groove, 
  Take advantage of your roll and attack your opponent
  with a LP, d + LP, d + LK, [Insert Special Move Here].

Advanced Strategy

RCing (Roll Canceling) is good if your opponent is more offensive.

Match-ups