I see our friend from Australia is up and about.
One thing... you can have variable speed control on some ceiling fans, much like a dimmer in a sense. Make sure your literature says your fan is compatible with that type of speed control. The best ones are pass and seymour IMO. In fact I like their speed controls & light dimmers period. Anyway take a look at different makers and see whats available, the internet is a great place to do this.
You can have the set up you want...no problem. Just make sure you are purchasing a 3 way dimmer and and a 3 way speed control.
You can get these separate or as one device in conjunction with three way switches. There have been a lot of advances in whats available, and I'm not up on all of them.
I like pass and seymour but there are many, many makes for what you want.
1.) Read the instructions with the Fan you bought and make sure there aren't any restrictions on what type fan control you can use. Usually the only one will be if it is compatible with a variable speed control.
2.) Make sure you get quality dimmers and controls. The fan speed control needs to be of the "no-noise type" don't buy anything else. These will keep the motor from humming if the fan is a lower end fan....ie....cheap vs expensive. Some literature with fans will tell you if it will have to have this type control.
Follow directions from the installation literature such as be watchful for stuff like the... fan must be set to the... highest speed...that sort of thing
Other wise your going to be scratching your head wondering why the fan doesn't work right.
Here is a product that allows you to have speed control at two locations. If you choose.
You will need two circuits ie...one speed control and 3 way switch and one lighting 3-way circuit...(two 3-way light switches).
I can't view the diagram mentioned so it should be something like this...
Incoming Power to the box with the speed control and 3-way light switch. Then a 14/3 G from this box to the light/ceiling fan. Two 14/3 G's to the other switch box.
At the box with the speed control connect two pigtails to the black incoming power wire in a wire nut. One to the correct
wire/screw of the speed control. Connect the other pigtail to the dark colored screw of your 3-way switch. this screw is called the common and may be labeled as such.
Take the white incoming power neutral and connect it to the white neutral of the 14/3 going to the ceiling fan in a wirenut.
Take the two black wires in the 14/3's going to the other switch box and connect one to the red and one to the black of the 14/3 going to the ceiling fan in wirenuts.
Take the red and white in one cable going to the other switch box and connect to the correct wires of the fan control.
The other 14/3 for the light circuit do the same to the 3-way switch. It doesn't matter which of the two brass screws the red and white of the 14/3 connects to on the 3-way switch.
At the other switch box connect the red and white from the 14/3 coming the fan control to brass screws of the switch. Then connect the black to the dark colored screw.
Same with the other 14/3 at it's 3-way switch.
At the light connect the white to the white of the ceiling fan connect the black to the black and the red to the blue or whatever color is designated for the light.
Note: The white wires connecting to the switches and speed control are used for hot and should be colored or taped black at the termination points. this is just a way of making sure anyone fooling with this knows they are not neutrals. Seems silly to me but thats the way it is to be code compliant. IMO if you don't now anything about wiring something like this the black marking isn't going to mean squat to you anyway.
Hope this helps
there are several products out there and the wiring will be...who knows?... so it depends on what you purchase.