Haynes are struggling enough now that cars are becoming unserviceable. That's why they've produced useful manuals covering more general topics such as welding, babies, and women!.
I'm keen to encourage people to buy these manuals from Haynes rather than distribute them around the internet. That way they might get enough money to fund more useful things such as a dedicated MIG manual. Otherwise the only source of MIG information will be from people like me on the internet - and you can't rely on me - my advice changes by the hour.
The accountants at Haynes also need to understand that £22.00 for a manual for whatever its purpose is too expensive.