Ford Fiesta 1.8 Deisel Oil Change Problem?

I have need for an oil change it is totally black, just bought a ford fiesta second hand.

I am unemployed so I have had to DIY this oil change myself, but I have found that getting the drain plug off is a huge problem.

I am not even sure if the nut has to be taken of clock or anti clock wise, but it sure is stuck, what can I do.

Any help appreciated.

Please email answer to dwilliams03@blueyonder.co.uk