there are some excellent spine charts out there, if you are having a tough time finding them i can send you some.
but like said above, they are just a starting point, there are so many variables that can affect your final tune.
and like it has been said too, a test kit is a great way to go.
as for tuning, i have moved away from bareshafting with wood, make no mistake, its an extremely accurate methodology, but irrespective of the wood you shoot, you stand a higher chance of breaking wooden shafts than say carbons when bareshafting.
if you have a good supply of shafts, and are pretty close in spine to where you need to be, and can keep your form really consistent, i would bare shaft. bareshafting will highlight an errors or inconsistencies in your shooting, and thats where i break them usually, i shoot a few and after a while i lose a bit of focus, and i make an error, that maybe with a fletched shaft wouldnt even be noticeable, and thats it, done!
i am moving more and more towards "broadhead group tuning"
fletch up two arrows, leave them a little longer, so you can trim back as you tune. one with a broad head, one with a fieldpoint, choose a comfortable distance where you can get a consistent grouping, say 15 or 20 yards. shoot the Bh, a few times and get an accurate assessment of a grouping, i circle my impacts, and mark the center, then do the same with the FP, compare groupings. see the affixed pic for weak and stiff and tune accordingly.
its a very effective and easy method.
nice thing is that if there are soft spots in your target, that would normally give you a false reading with bareshafting, it doesnt matter here, as we are only looking at points of impact, not angle of shaft!
the woodies spine groups are in tighter group ranges than carbons, so that may or may not make your tuning easier.
as for straightening, i use a roller straightener, Ace Archery sell a good one, probably get one through any of the sponsors on here, some folk use a bottle or a screwdriver or a cuphook, i think the roller doesnt flatten the shaft,so i prefer it.
it just takes a little bit of practice, a shaft spinner is a handy tool to have, both for straightening, and for aligning points and nocks when attaching them
as to shafting material, thats a very personal choice, they all have their pros and cons.
personally i prefer Sitka spruce, Sitka is considered to be the strongest wood for its weight in the world. there was a good reason they used, and still use it for airplane frames and for masts and spars on sailing vessels. Its light and stroooong!!!
it is one tough wood. i only stump shoot and hunt, and i have had my stumpers last thousands of shots.
they are the lightest shafts you will find, this will allow you more latitude when selecting point weights, and you can get a very high FOC on your shaft without getting an excessively high arrow mass.
i have built Sitka wooden arrows with 20% foc quite easily! with about a 600gr arrow for my setup, or a 13-15% FOC with a 530gr arrow, thats on my arrows that are 33" to BOP !!!!, so in comparison, if these were on 29" arrows for a 28" draw they would be about 40-45 gr lighter than the weights i have achieved.
its a personal choice, and i am sure you will love shooting woodies no matter what you shoot.