Liquid CBD oil tinctures are the most popular item currently on the store. If you're looking for the most "bang for your buck", you'll probably want to go with this one which is 600 milligrams in total. Project CBD recommends the sublingual route of administration(under the tongue) in their guide about the optimal ways to take CBD.

If you like tinctures and these are your preferred cannabis product(like they are for MANY people), you really should try a couple different flavors to see what you like best.