Can you help save me some money?

I purchased an AGA, ages ago now for �1,500. Now i have had to have loads of work done to the chimney to make it 'ready' for the aga and when all is complete i will have to pay �500 to get someone to emble it. I know people have embled there own. Do you know where i can get info for FREE with instructions for this? Thank you one and all for your answers. x