Step 1: Buy the game.
Step 2: Download the game.
Step 3: Open the game.
Step 4: Wait for the game to load (YOU HAVE TO WATCH THE INTRO TO GET IT TO WORK).
Step 5: Play the game online.
Step 6: Get absolutely destroyed by huge tryhards.
Step 7: Look up how to win in UMvC3.
Step 8: Go to this guide.
Step 9: Follow step 1 to 8 ten times.
Step 10: After doing it ten times, realize you suck at the game and quit for like 6 months.
Step 11: Come back after 6 months and look up a tierlist for the best characters.
Step 12: No matter what rankings, PICK VERGIL!
Step 13: Win.

If this guide doesn't work, follow step 10 ONLY step 10.