A good exercise

Some years ago the Federal Air Marshals had a qualification shoot that was very challenging.  The history of the original TPC (tactical pistol course), and course of fire is in the link below.  

https://www.concealedcarry.com/training-2/can-you-shoot-like-the-original-federal-air-marshal/

I'm beginning to chip away at it, starting with stage 1.  This stage requires 2 shots in the hi score area (white column) from 7 yards with a combined time of 3.3 seconds.  That's firing from concealed, at a target small enough to require sighting, in 1.65 seconds or less, for each shot.  

To the right is the proper target for the TPC,- for now I shoot the FBI QIT with the upper and lower hi score zones connected. 

It's evident after trying this is a good exercise, much more challenging than the FBI qual even though the latter includes greater distances.  I shot six 8 round magazines and only on my 3rd, 4th, and 5th magazines was I shooting fast enough, mainly inside the column but snap acquisition of the sights will be a ... growth area for me.

If you intend to carry a firearm I recommend this drill.  BUT I do not recommend starting with this course of fire if you're new. I've worked up to this by progressing through the Navy NHQC, then the FBI qualifier, for some years first.

It will certainly help you sort out your kit and likely drive you to purchase a laser trainer for home.  

Be careful and good luck!