George Ingles

That's some interesting information via those links posted above.  
I hadn't done any research into the benefits of tree gums and their specific particular uses, aside from some famous examples like Frankincense and Myrrh/Guggulu.  
I get my Pine pitch from the tree by the Horse pasture fence -- I don't think that is much help to you, sorry.
I will say that there are some consistencies in the pitch I prefer.  I like the stuff that has been drying on the tree awhile and has a gummy consistency.  The already-crystalized pitch works okay too.  The fresh pitch is too sticky to work with easily, for me.

Good reminder about Raspberries- lots of Calcium there!  I will remember to gather leaves for tea this year!
Did you boil down the Birch sap or use it fresh?  I would think maybe it keeps better once reduced, but I don't have experience.
 

I've used the gum.  What I think I understand about Xylitol is that it is derived from Birch tree sap.
I've read that it is a kind of sugar that the cavity-causing bacteria prefer, but they suffocate from eating it.
I have not heard of it being used for rebuilding enamel, but I would love for that to be possible and will research now.

Perhaps tapping Birch trees and using the sap directly could work?
I often chew on pitch from Pine trees.  It is good for temporarily filling the cavity pockets and getting food debris out of there.  It feels very antibacterial - I wish I had started much earlier.

I sometimes nibble on old man's beard Usneas that fall out of the tall Fir trees during windstorms.  
I have also made simple tinctures with them.   I find it a strange sour-sweet-bitter-astringent flavor.  It is very 'medicinal' tasting unlike a more casual herbal 'chaw' such as Plantain or Sage leafs.  I don't chew on It as often, but I aim to get to know It better.
And now I'm curious to learn more about lichens as food and medicine!

*Also, always please be sure of plant identification and safe uses before ingesting... of course.*

I have never really understood this problem.  My sister abhors beets because she says 'they taste like dirt.'
Presently I am eating a beet I just picked up off the ground in my garden; first I brushed off the dirt using my shirt, don't worry.
It is sweet and delicious.  It is sort of earthy yes, but in a way I adore.  This variety on which I am snacking raw is Detroit Red.

There have been times when Beets have tasted too sharp I suppose - as in it 'burns' the back of my throat... not usually though.
Maybe my body craves the Iron and good things a Beet has, so I like the flavor more?

Roasted Beets (whole or chopped) is the one way my sister finds them tolerable... and it is quite tasty that way!
Reminds me I need to order Beet seeds!

I have wanted a Parlor guitar for years!
I'm not sure why, I just think they are cool and I like the sound they give.  
They are a much smaller body than typical classical guitars and are much quieter than their larger kin.

From what I've read, people use steel or nylon - low tension, light gauge.
But I haven't any personal experience playing one.

I have steel-string acoustic guitars, and nylon string classical guitars.
I consider them both to be 'acoustic' as they are both generating the sound without electrical amplification.
Resonator types I think of as acoustic too even though they have more metal structure to amplify sound.

I had a steel-string acoustic and an electric guitar for a long time and never learned to play them, partly because of the pain it caused my uncalloused fingertips.

When I got a Classical nylon-string guitar I was finally able to get it.
Depending on the specific guitar, a Classical guitar usually is quieter than a Steel-string acoustic type.
I tend to use guitar as a vehicle for singing which is what I really like.
Mostly I play rhythm chords and sloppily pick out notes now and then.
My playing skills are not great, but it brings me great joy regardless.

I wish you success in your musical adventures!

I like chunks of Fir bark as a path material also, though I have noticed that where there is Quack Grass or Crab Grass growing adjacent or under, its rhizomes thrive on the undersides of said bark.   I'm not sure about oak bark as much.
Though I deal with this by adding woodchips or other mulch-materials on top and easily pulling the grasses that pop up.
Also I use bark as a sort of kindling in the fireplace.  And for craft purposes. .

We used to use a Sawzall reciprocating saw around here lots, but I never tried it for pruning.
Amazing tool for all sorts of jobs, though.  I used a plug-in type - for cutting holes in walls mostly for access to conduits etc.
always was bothered by the vibration, but I do think of it as a great tool for accessing difficult spots that need cutting.

For larger-than-lopper gauge pruning cuts on fruit/nut trees I like a nice sharp hand-saw made for the purpose.
I do get joint fatigue from too much of that, but the Sawzall gives extra stress to my 'under insulated' nervous system... so I stick with judicious use of hand tools as much as I can.

I like the idea of my wild-style gardening leading to some new hybrid or variety, but I don't have the scientific mind to do plant-breeding in the controlled manner that Carol Deppe talks about... rather I, "Just try things."

In my mind I have been formulating The Perfect Blackberry Wrangling Tool for decades now... while I continue using loppers, grub-hoes, and pole-saws for the job.   The specialized tool I imagine is still just a notion in my noggin....

My Grandpa used to say, "Good enough for who it's for," and I sort of just make-do with what I've got.
Though he would have gone to his shop and invented that tool in a couple of days, rather than ponder it for decades like me.