HOLDING
Hi there
This is how I was taught to enter a hold.
Assume a right hand hold.
Immagine a horizontal line dividing your HSI/DI into a top and bottom half. Now because its a right hand hold, tip this line upwards 20 degrees on the right. It therefore slants upwards from left to right.
Now a line is immagined from the centre of the instrument to the twelve o clock position.
You now have 3 segments or sectors top right (is less than 90 degrees) is teardrop/offset, top left (is larger than 90 degrees) is parallel, and the biggest slice bottom is direct entry.
Entry is decided on heading not track so you're tracking towards a beacon on a specific heading and say your plate shows the outound heading of the hold to be 120 degrees. You simply see where 120 falls on your "HSI PIE CHART" and that is you entry. ie. depending on your heading if 120 falls in the top right offset segment then that is your entry required.
For a left hand hold just tip the horizontal line the other way so the smaller sector appears top left now.
This is how a certain Spanish fto in Malaga teaches it.
Good luck