Lucky! My suggestion is that you google how to clean and process raw wool. You'll want to look at spinning sites. Also, depending on your plumbing system you may want to wash it outside in a tub. I have septic so I do not wash any raw wool in the house.
This is an ok tutorial. She uses a washing machine.
http://sweetleafnotes.blogspot.com/2...off-sheep.html
Just remember to not run water on top of the fleece as you will lose some of it to felting. Depending on what you will use it for will determine how clean you want to get it. I like to spin with a fair amount of lanolin so I don't take mine 'squeaky clean' but that is an individual preference.
There are probably some youtube videos on this as well. Have fun!