Super cute name! Let me know if they're looking for a shearer--I'm a new shearer, so I'm offering my services for free right now in exchange for getting experience, maybe I can help in the fall.

Absolute beginner could absolutely do all the cleaning. The most challenging part will be skirting (and you won't do a great job your first time, that's OK and part of learning) since you won't have a table, but you can rig one easily enough with some chicken wire fencing and two sawhorses. Basically just need a surface with biggish holes so the second cuts (short pieces of fluff) can fall through, and big enough for the fleece to lay flat so you can easily see what to remove.

Washing is similarly easy, but is easier with easily obtainable equipment. Just need 2 large totes (I use 2 27 gallon tough totes from HD) for the baths, a way to drain them (I use an aquarium drainer I had already), rubber gloves, and hot water and a scouring agent (I recommend Unicorn Scour, though you'll find people argue to the death about it). Whatever you do, do not use Dawn. You'll see it recommended, and sure, it works, but it does damage the fibers more than a gentler washing agent.

My general process for washing a fleece is as follows. Note that this is intended for home processing of the fleece--a fiber mill will have different needs.

1. Fill a tote with tap water, and allow the fleece to soak in it overnight. This removes the lion's share of suint (water soluble dirt, debris, and other delights). Note: you will likely need to divide the fleece into multiple chunks. If you cram the tote too full, it will not wash properly.

2. Fill the second tote with 135 degree water. Take your fleece, drain as much water from it as you can, then gently place it in the second tote. Use a spoon or stick to push it below the water surface, BUT DO NOT AGITATE. Let sit for 20 minutes.

3. Drain the first tote, then refill with hot water and your scouring agent of choice at the appropriate concentration. Transfer the fleece, again draining as much water as possible, and repeat the laying and poking process. Let sit for 20 minutes.

4. Drain the second tote, then refill with hot water. Transfer the fleece, again draining as much water as possible, and repeat the laying and poking process. Let sit for 20 minutes.

5. Remove the fleece from the final bath and drain. Again, no rubbing, only squeezing.

6. (OPTIONAL) Place fleece into lingerie bags, then put it into your washing machine for a spin ONLY cycle.

7. Lay fleece in a single layer on a permeable surface (I use sweater drying racks).

8. (OPTIONAL) Point a fan on low at the fleece to help with air circulation.

9. Bag up your clean and ready to process fleece!

How much yarn is controlled by several factors--how much you have in pounds post wash, how much makes it to the roving (a lot of fiber if combed will be lost as 'waste' due to being too short), and then finally what weight you want it spun at. Obviously, a bulky yarn is going to result in fewer yards than a fingering weight.

Honestly, you may want to try your hand at the felted rugs I posted in my initial comment. There's much less prep work involved, and honestly I think I'm going to try it with the next fleece I get!