Up to 150 kts WCA (Wind Correction Angle)= 1/2 x windspeed.
Your max drift or max correction angle is half the windspeed.
Above 150 kts it's 1/3.
Check it with your CRP, it's surprisingly accurate.
Descent angle of appr. 3 degrees GS/2 + 0
eg GS= 90 kts.......divide by two= 45 +0 = 450 fpm rate of descend
If you have no GS indication use TAS and approximate the wind.
No TAS indication use IAS for quick reference.
You can fly surprisingly accurate non-precision approaches that way.
Quick way to get from IAS to TAS:
TAS increases over IAS with 2 kts/1000 feet.
Easy to remember, standard lapse rate is 2 degr./1000 feet.
eg altitude is 8000 feet IAS 100kts, TAS is 8 x 2= 16 kts higher then IAS, 116 KTAS.