Below are some instructions on how to make tinctures. Cannabis tincture has been very effective for pain management among patients. It has helped me greatly. 

Great care and attention should be paid when making these. 

Copied from geenbridge medical site :

Cold Method with Ethanol
Making tincture cold preserves the integrity of cannabinoids. To be potent, this method requires starting material high in cannabinoid content such as flowers or kief made from trim and leaf. The material must be mold free and dry. Drying can be accomplished in the freezer (-4-10 degrees Celsius) or better yet by placing in a liquid proof bag into a dry ice/ethanol ice bath (-70 degrees Celsius). Once water has been removed then the surface area of the starting material requires expansion. This can be accomplished a number of ways but two ways stand out:
Using flowers (bud)- Place dried buds in a coffee grinder and pulse until thoroughly ground but not powdered.
Making kief- Rub dry trim and leaves over a silk screen. Collect the powder the comes through the screen. It should be a very pale green. “Kiefing” is an age old way of extracting trichomes from plant material.
Whether kief or ground bud is used both should kept ice cold for this preparation. Similarly, the ethanol to be used should also be ice cold throughout the process.
Selection of alcohol- ethanol or ethyl alcohol is the form of alcohol that can be used by humans. The proof listed on commercial alcohol refers to the percentage of ethanol that the beverage contains. The proof is twice the percentage, so 80 “proof” means that the mixture contains 40% ethanol. The higher the alcohol content used, the better the extraction will work. Ideally, 200 proof ethanol would be best except that ethanol cannot be distilled to this proof so benzene is used to remove the last vestiges of water. This makes “pure” ethanol poisonous.
Many folks use “Everclear” which stands at 190 proof or 95% ethanol. Everclear has no taste. Apparently, Everclear is not available in all States. A close second choice is 151 proof rum. This is a light amber liquid that is 75% ethanol that has a sweet taste. One of our caregiver writers will use nothing but Korbel brandy because she likes the taste. Others use iced Russian vodka. These “normal” distilled spirits are 40% to 50% ethanol. Some patients find that the higher proofs ethanols like Everclear and 151 rum burn too much under the tongue. If burning is a concern consider a high quality 90-100 proof Vodka.
Cold Extraction and purification- Use at least one ounce of starting material to each pint of ethanol. Place cold powdered kief or ground cannabis flowers together with ethanol in a glass quart-mixing jar. Close the jar tightly and vigorously shake for five minutes then return to the freezer. Continue to agitate the mixture every few hours with refreezing. Continue for a period of two to three days.
Pour the cold mixture through a double thickness of sterile cheesecloth. Save the cheesecloth “ball” for topical uses or use the material to make bud butter once dried. The liquid collected through the cheesecloth should then be filtered twice through a paper coffee filter. Use gloves throughout the process, as it is necessary to squeeze the cheesecloth and coffee filters to facilitate the extraction. Without gloves some of the material will be absorbed on the skin.
If Everclear is used the tincture will be pale green to golden. If 151 rum is used an amber tincture results. Dark green tinctures mean that excess plant material is present. This does not mean that the tincture will not be potent, just taste nasty. When Everclear is used, various flavor extracts may be added (vanilla, raspberry, etc.). Be careful to use only a few drop of flavor extract.
Traditional or Warm Method
The old fashioned (and effective) way to make tincture from trim, leaf or “shake” is to grind the plant material to expose surface area. A fine grind is not needed and will just make the tincture cloudy. A rough chop will do. Most folks can’t afford to use kief or bud for tincture but may have leaf handy. If so, this is the way to go. Use ethanol as described above in the same proportions. The key difference is that in this preparation the materials are kept warm (not hot). Light must be avoided.
Place the ethanol and chopped cannabis in a large glass Mason jar. Shake at least once a day. Place the jar in a brown paper bag or otherwise shield the jar from light. Leave in a warm spot (near a window) for 30-60 days. The mixture will turn a very dark green. Strain as previously described through cheesecloth. Save the “shake ball” for topical applications.
While this method produces a nasty tasting tincture, it is powerful. It may upset some fragile stomachs. It is recommended that Warm Tincture be used orally in cranberry juice or coffee with sugar. Keep the filtered tincture in light blocking glass jars or bottles in a cool dry place (refrigerator or freezer is fine). The shake ball should also be kept in the freezer. For topical applications, just take out the cold shake ball and apply a few drops of fresh tincture to the cloth then hold it on the affected area for a few minutes with gentle rubbing.
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Glycerine-based Tincture
by Leanne Barron

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You need to use food grade U.S.P glycerine, this can be relatively hard to find inexpensively but a gallon lasts a LONG time.Glycerines have a shorter shelf life than alcohol based tinctures and while they can sit on the shelf I refrigerate mine. Vegetable glycerine has nearly no impact on blood sugar or insulin and is very low in calories (4.3 per gram). It’s sweet taste makes the tincture more palatable than the alcohol based tincture and is a suitable substitute for those concerned with alcohol consumption.Add the amount of cannabis that you desire for potency. I added 6 oz of roughly trimmed (finger trimmed the leaves off) cannabis to 1 gallon of glycerine. For your personal preference add more cannabis or less depending on desired potency. I blend mine, using a coffee grinder, blender or if you are lucky enough to have a Vita Mix. Make sure there is no other product matter in whatever you use. I use a clean basting brush to clean out my Vita Mix when I am done powdering my cannabis.

Place in a crockpot on low. Some crockpot’s low settings are too high so you may not be able to use yours. A “Keep Warm” setting if you have it is the best choice. Too hot, and you are killing the properties you are trying to extract, you want the mixture to be as warm as possible without boiling, I left my tincture like this for 24 hours. I have heard people leaving the tincture from anywhere from 4-6 hours to 3 days. You can try the tincture at intervals to decide when you are done. REMEMBER that glycerine tincture retains heat VERY WELL, do not burn yourself!!
If you do not have a crockpot you can place the herbs in a clear, sealed jar in a warm, sunny spot and accomplish the same thing over 4 weeks. Some people make their “sunshine tinctures” over 2 weeks. I do not feel that is long enough, especially in colder weather. Some leave them in the sun for up to 12 weeks. I have never seen a need to go that long myself. Shake each day to mix the herbs in.
When ready to strain use cheesecloth and a strainer to extract the cannabis debris, the THC has been extracted and the tincture is ready to use. The best way to store is in a glass amber bottle. A good place to obtain a large bottle for the bulk of your tincture is a brewery store that has supplies to make wine or beer. I also obtained a few small amber bottles with eye droppers for convenience. It takes a lot longer to strain glycerine than it does alcohol, the tincture will drip when strained instead of flow.