There are a few training & tactics books/DVDs out there that teach different methods. Point shooting or CQB style shooting is an advanced skill you can learn but it requires intense focus & in-depth training. COL Rex Applegate taught point shooting to OSS(Office of Stratigic Services) agents in the WWII era & the UK's SAS & SOE units used it often.
Actor Tom Hardy uses point shooting in the action/comedy:
This Means War.
www.IMFdb.org
As other forum members posted, Id learn basic marksmanship & safe gun handling first. The late Jim Cirillo, who ran the NYPD's elite Stake Out Squad & later became a full time instructor for US Customs at the FLETC,
www.fletc.gov said he would always watch the sidearm's front sight.
He had many documented MOS(member of service) shootings while doing the armed robbery details & his officers/detectives never had any ADs or problems.
See his books & DVDs here:
www.paladin-press.com .
For training or tactics see;
www.nra.org www.magpul.com www.paladin-press www.deltapress.com .
White-lights & laser-aimers like the Crimson Trace line or Lasermax can help but they DO NOT replace basic skill training.
ClydeFrog
www.lasermax.com www.crimsontrace.com