I am thinking of free hand sharpening. Is this not advisable for a novice?
It depends on the novice. My learning to sharpen was doing it freehand. The worst that can happen it to take a slice out of a water stone.
The advantage to a blade holder for sharpening is it can help if you feel a need for a bevel angle to be precise. It can also allow one to move the blade back and forth faster, helping to speed up the sharpening time.
My only use of a shop fashioned guide is when it is a blade that has a bad nick or needs a lot of metal removed. Haven't bought many of those of late.
jtk
"A pessimist sees the difficulty in every opportunity; an optimist sees the opportunity in every difficulty."
- Sir Winston Churchill (1874-1965)