But first I give some tips you must learn on pyro:

• Don't always use W+M1 it's a noob trick and it's not effective.
  
• Pyro can do a lot of tricks whit his weapons

So; now let's start with the guide!

The Pyro has got three weapons: Flamethrower, Shotgun, Fire Axe

N1) Flamethrower:
it can throw fire and he can Airblast
What is Airblasting?
Is a trick who pyro can reflect: rockets,grenades,flare gun projectiles,arrows.
You can also airblast your enemies.

AIRBLAST TRICKS
Airblast+Shotgun= the shotgun it's a short-range weapon, if you are face-to-face on your enemy the shotgun deals 103 Damage!
So:
Airblast; Switch weapon to the shotgun, And Hit!
Shotgun can also be used to deal damage to Scouts

ANOTHER TRICK:
Throw Fire and hit your enemy with Axtinguisher, you deal 195 Damage!

Finally:
The Axe can be used to kil Spies or Scouts;

ENJOY! GL HF!