Instrument-rated pilots are required to perform and log holding procedures at least once every six months, along with six instrument approaches and intercepting/tracking navigation courses to maintain IFR currency. Most pilots hit their peak of holding proficiency during instrument training, but the details tend to fade over time since holding procedures are rarely flown.
IFR holding pattern interactive scenarios
Planning an IFR departure
Sporty’s webinar video: How to Pass the FAA Instrument Written
3 holding scenarios to perfect in a flight simulator
RNAV/GPS Instrument Approach Tips – LPV, LNAV+V and more (video tip)
Understanding and Executing IFR Holding Procedures
Quiz: Regulations for Instrument Flight Rules
Choosing the best IFR departure procedure (SID) — Advanced IFR, by Pilot Workshops
Chart Smart: IFR Enroute Low Altitude Chart airport depictions
5 “must-have” products for IFR training