For a good, basic guide on how to use the soxhlet, check out this video.
To use the sheet we found most reliable, go here
So far we've used the soxhlet extractor to make a rose absolute (water based) and a tobacco absolute (butanol based). The product you synthesize from the soxhlet won't be very pure (it'll be a mix of the solvent and the extract) but still usable for perfumes, if you are so inclined. It's possible to 'clean' the product using the rotovap.