You dont have to go on a course for looking after pigs, although it seems nice to do so.
Any and all information can be gleened from the internet, even videos of sick pigs if you need them to recognise when your pigs are 'off'.
This website is a mine of information.
Plain old common sense and knowing your stock is the best way to look after them.
Id love to know just how many farmers go on courses, not many I bet and I tend to think a lot of courses although set up with the best of intentions and the best info are just a fashion rather like organic stuff was and is.
Id rather spend the money on the pigs myself.