To grind turning tools correctly is a very NECESSARY skill,and should be mastered as soon as possible when you get a lathe.
I suppose one of the prime things you need to do is develop the ability to look at a correctly ground tool,or a decent picture of one(from,say,a lathe manual). Learn to look carefully at it and imitate the angles when you grind the tool.
You need to have SOME mechanical leanings. Like,grasp that the cutting tool needs a clearance angle on its front,or leading edge or it will not cut. period. I have seen otherwise competent craftsmen who did not understand this when they got a lathe,and simply could not figure out why their tool would not cut.
I saw an otherwise good gunsmith make a 3/4" tap for threading flintlock breech plugs,and leave no clearance angle. He could not understand why the tap would not cut. I ground a clearance angle on each flute,and it cut quite well. The tap was very well made but for the lacking clearance angle.
I saw some blacksmiths let their lathe tool get ground until the cutting edge was extremely obtuse. Then,they thought the lathe I had gotten for them was no good. These were very long term craftsmen. I explained that they would not expect their pocket knives to cut with such a blunt cutting edge. The tool worked perfectly well after I re ground it properly. The lathe I had gotten them was a Hardinge,too!!
So,learn to LOOK AT the sample carefully and imitate it at least.