Carpet shampooing - where do I start?

[Handywoman]

I have had plasterers in and they took old, manly ceiling boards down and a world of black dusty horrendousness rained down on my carpet, transforming it from fine to filthy (with black marks).

I am desperately hoping the stains will shampoo out but have never thoroughly cleaned my carpets before . Do I need to hire equipment? If so from where?

Need to do it quick before plasterers come back later next week (next room has wooden floor thank goodness).

Any recommendations/help appreciated!

I would like to clarify my old ceiling boards were manky not manly(!)

Surely getting plaster dust wet (as with shampooing) will create a gunkey mess?

I would dry hoover it as much as possible.

There's black marks, it's more than plaster dust

I'd get a professional carpet cleaner in - their equipment will be more powerful.

I would wait until plasterers finished everywhere and then get the professionals in.