Whatever the form (salt, FB, still in plant material unextracted), store it in a cool dark and dry place. Silica desiccants and o2 absorbers (like in jerky bags) will help keep it from degrading as well.
Fumaric acid salts seem to be the most stable, for long term storage i would extract all the plant material and end up with a pure fumarate salt. Store it in amber vials, in a airtight/watertight/lightproof container, with silica desiccants and o2 absorbers at a cool temp. theoretically that should last a long time. you could even nitrogen purge the vials with wine preserver if you wanted.
oxygen, heat, moisture, and light. Protect it from those four to the best of your ability and it will last.
To freebase, mix 1:1 fumarate salts with lime (caoh) and hydrate. Fully dehydrate then pull with acetone and evap to get the freebase. Recrystallize if desired.
"let those who have talked to the elves, find each other and band together" -TMK
In a society in which nearly everybody is dominated by somebody else's mind or by a disembodied mind, it becomes increasingly difficult to learn the truth about the activities of governments and corporations, about the quality or value of products, or about the health of one's own place and economy.
In such a society, also, our private economies will depend less upon the private ownership of real, usable property, and more upon property that is institutional and abstract, beyond individual control, such as money, insurance policies, certificates of deposit, stocks, etc. And as our private economies become more abstract, the mutual, free helps and pleasures of family and community life will be supplanted by a kind of displaced citizenship and by commerce with impersonal and self-interested suppliers...
The great enemy of freedom is the alignment of political power with wealth. This alignment destroys the commonwealth - that is, the natural wealth of localities and the local economies of household, neighborhood, and community - and so destroys democracy, of which the commonwealth is the foundation and practical means.” - Wendell Berry