Sam's course is excellent - and worth every penny. You can sometimes find used copies on ebay - an even better deal. Nothing wrong with him making money.
He can copyright the tapes but the tincture making is not 'copyrightable' and doing a search on google will bring up hundreds of sites that give directions on making them.
Not much to the basic tincture. Get good quality organic herbs. Blend together with vodka. When it settles down you want it 3/4 full of herb. Put it in a jar. Shake it every time you see it. Let it sit at least 2 wks. The more the better but 2 wks will give you a much stronger extract than 99% of the herbals out there. (Schulze and Christopher and the Herbal Alchemist are 3 that would be in the 1% that is good).