Well Andy,
Firstly welcome to the slippery slope of Woodturning, you have crossed the first hurdle, (tools)
the second hurdle, 'How to sharpen them'. the best advice I can give you is to get some tuition.
The best place, other than getting personal tuition from a professional turner is to join a club, certainly cheaper.
Your profile doesn't say where in Lincolnshire you are from, so you need to Google,
Woodturning clubs in Lincolnshire or where you actually live. There are a few in Lincolnshire so hopefully
there is one near you. There you'll get advice on turning, equipment, sharpening, and hopefully practice.
John. B