Unless you are able to be supplied by someone else, you will create your own roadblock by picking a CRAFT skill first and having no resources to progress.
I suggest you get a GATHER skill first, raise it to 6 by only gathering resources and then pick up an associated CRAFT skill + refine the resources. It's the delayed route to wait on refining resources, but you will fail a lot less and thus save yourself a lot of wasted effort. If you gather all the way to 6, you can probably refine all the way to 10.
Repeat this gather and refine delay as needed for higher tiers for maximum resource efficiency.
For example:
-hunt for carcasses to level 6
-pick up outfitting and refine all the carcasses to leather -> hunting up to level 10 from refing (unknown outfitting expectation)
-continue hunting into tier 2 if you are able to handle the prey, but save all of the higher tier carcasses to refine once you are around level 16 hunting
-any tier 1 carcasses can be refined immediately since you have already reached the maximum bonus for that tier (you will get 2 leather from 1 carcass without fail)
Prospecting is similar, but you will get more resources and less junk from the ore/gem vein and less failures on refining, but you only ever refine 1 product per raw material
I haven't done forestry much to comment.
You could always pick up a gathering skill for awhile, refine and store the necessary resources, then pick up craft skills and make some basic supplies and equipment, forfeiting your previous trade skill progress in the process each time and then taking up gathering again? It seems that getting some basic stuff to get started is important, but you will have to fight for better/best stuff.