Step 1. Only look at this guide.
Step 2. Look up nothin.
Step 3. Don't look at the achievements.
Step 4. Pull out credit card.
Step 5. Enter info into steams payment system.
Step 6. Purchase game.
Step 7. Be completely surprised at everything as you play.
Congrats! You enjoyed something while completely ignorant of everything about it providing some joy I hope!