I would model this after Traditional Chinese Medicine. TCM has been around for about 2000 years and doesn't require expensive lab tests to be effective. From my studies so far, treatments consist of appropriate foods, medicinal herbs, minerals, and some animal parts (although I don't recommend this as a rule - too many issues to go into here). Pressure point therapy and massage are of great value but I'm not sure this is the focus of discussion. I personally wouldn't recommend acupuncture for this application unless you want to go whole hawg with that and get good, complete training. That isn't something most people want or can afford to do.
So, focusing first on foods, herbs and minerals, and the all-important ability to treat the right ailment with the right medicine. Someone has already mentioned case studies and that is indeed crucial.
Where will you get your medicines? Not everyone can grow or forage for what they need yet that's a very valuable skill. I'd recommend starting out with some foraging for things like dandelion (one of my all time favorites), purslane, chickweed, etc. since those types of herbs are fairly prevalent. Of course the herbs have to be from soil that's not been treated or by the side of the road, so it can take some time.
Take your foraged herb (or purchased as the case may be) and make several preparations with it. For example, dandelion tops and roots have different functions. So make an infusion with the fresh tops and a decoction with the fresh roots. Then dry the roots and tops and repeat. Knowing what the herbs look like fresh and dry is important. You find out real quick that drying a whole root takes a hammer later to break it into small pieces for further use. Make a salve, a tincture, and other preparations from the same plant, which allows you to apply the herb in multiple ways (ingestion, inhalation, topical, etc). I think it's more valuable to know a few herbs or treatments well than know a little about a lot of herbs. Take garlic (yes please!). It is common and effective at treating viral, bacterial, fungal, and parasitic infections. Garlic dosage is important for these ailments so there is a lot to learn.
I would start people with basic, common, effective herbs for everyday ailments, then work up in complexity and severity. You don't want someone trying to treat an acute appendicitis with an herb tea or poultice unless you have NO other choice and understand the risk.
This is just scratching the surface though. I love the discussion and different ideas.