Since Grey Knights might be a bit too much to throw at new people all at once I have made an Imperial Fist 50 point list also now.

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Imperial Fists 500 points

HQ (160pts) 
Captain (160pts) 
And They Shall Know no Fear, Chapter Tactics, Independent Character 
Artificer Armor (20pts), Storm Bolter (5pts), Storm Shield (15pts), Thunder Hammer (30pts) 

Troops (140pts) 
Tactical Squad (70pts) 
And They Shall Know no Fear, Chapter Tactics, Combat Squads 
4x Space Marine (56pts) 
Space Marine Sergeant (14pts) 
Bolt pistol, Chainsword 

Tactical Squad (70pts) 
And They Shall Know no Fear, Chapter Tactics, Combat Squads 
4x Space Marine (56pts) 
Space Marine Sergeant (14pts) 
Bolt pistol, Chainsword 

Fast Attack (85pts) 
Assault Squad (85pts) 
And They Shall Know no Fear, Chapter Tactics, Combat Squads 
Keep Jumppacks, 4x Space Marine (68pts) 
Space Marine Sergeant (17pts) 
Bolt Pistol, Chainsword 

Heavy Support (110pts) 
Devastator Squad (110pts) 
And They Shall Know no Fear, Chapter Tactics, Combat Squads 
4x Heavy Bolter (40pts), 4x Space Marine (56pts) 
Space Marine Sergeant (14pts) 
Bolter, Chainsword 

Captain
Infantry
WS6 BS5 S4 T4 W3 I5 A3 LD10 Sv2+/4++

Tactical Space Marine
Infantry
WS4 BS4 S4 T4 W1 I4 A1 LD8 Sv3+
 
Assault Space Marine 
Jump Infantry 
WS4 BS4 S4 T4 W1 I4 A1 Ld8 Sv3+ 

Devastator Space Marine 
Infantry 
WS4 BS4 S4 T4 W1 I4 A1 Ld8 Sv3+ 

Bolt Pistol 
12" S4 AP5 Pistol 

Boltgun 
24" S4 AP5 Rapid Fire 

Chainsword 
S4 Melee 

Heavy Bolter 
36" S5 AP4 Heavy 3 

Thunder Hammer
S8 AP2 Melle, Concussive, Specialist Weapon, Unwieldy

And They Shall Know no Fear, 
A unit that contains at least one model with this special rule automatically passes Fear and Regroup tests. When it Regroups, the unit does not make the 3" Regroup move, but can instead move, shoot (or Run) and declare charges normally in that turn. Furthermore, if a unit containing one or more models with this special rule is caught by a Sweeping Advance, they are not destroyed, but remain locked in combat instead. 

Chapter Tactics: Imperial Fists
- Bolter Drill: Reroll all rolls of 1 to-hit with bolters
- Siege Master: Devastators gain Tank Hunter special rule and add 1 to the result when rolling for building damage.
- Combat Squads
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