Note 1: Big post, TL;DR at the bottom if you feel like it just getting the answer without the explanation.
Note 2: I'm just going to assume that part of this scenario makes me magically the leader of at least a small group of people who understand me and magically believe everything I say, because elsewise I'm just a crazy guy in the bushes and literally nothing will come of all my knowledge since nobody will believe or understand a word I say (and pretty much every "uplift" scenario in sci-fi has this happen anyways, they just generally go the "convince them you are a god/gods through display of your technology" route which I can't do without technology and as such am handwaving it).
Going of note 2 above, we should be able to (probably) survive, since I know enough survival craft to at least get a fire up and going, and they have to have at least some source of food or they'd all be dead already.
Honestly I think probably the best I could do would be to greatly advance their knowledge of medicine, basic agriculture, animal domestication, simple mechanics (waterwheels, most likely), and the written word (which would be very important for the last step, transcribing as much as you can of your knowledge before you die). Those things alone should provide some huge quality of life improvements, especially medicine. Knowing why diseases happen instead of thinking they are caused by bad spirits and understanding the basics of sanitation would lead to hugely increased life expediencies, and knowing some of the basics of a good diet/cooking would help there as well.
My bet is my society would end up with at least average quality of life, and would know at least the basics of a lot of the lower level technology like brick making, ceramics, and glassmaking. They would understand how to use a waterwheel, and how to preserve meat if we could find a salt source (be that a mine or the ocean). They would know how to write and communicate, which would spur communication and scientific advances through discussion greatly. They would understand and use a currency system instead of barter, which would also help. They would also understand the idea of interchangeable parts and assembly lines, though how much they could put them into practice at that technology level would be quite a question (however once some simple metallurgy is up the ideas go a long way). After that I'd probably end up spending the rest of my life dictating or transcribing as much of my knowledge as I could while we searched around trying to find the right rocks for metallurgy and experimenting with methods to get hotter fires.
If they could find a copper ore (which are some of the easiest to recognize) and a tin one (which is also fairly easily recognizable, though very geographically limited), and could get a fire hot enough we could get bronze production up and running which with a little work could get us to very basic steam engines. Also if we can find a cave with bat guano in it, and find some sulfur deposits (which are also fairly recognizable), we could get a very basic pipe gun up and running with black powder. At that point it's only a matter of discovering which grey rock yields iron and we can get a basic blast furnace up and running for steel production (though I'd probably be dead before long before that). Once we have iron and copper we can get the basics of electricity, which leads to magnets and aluminum, though my knowledge gets spotty enough they'd have to do some discovering of their own. Of course, most of this depends on finding the right metal deposits, which are often very geographically restricted. It's fully possible that I could end up dying of disease or old age long before the right ones were located, in which case they would be forced to rely on any transcriptions I had made, which should include at least enough to guide them in the general direction they need to go all of the way up to the extreme basics of the information age.
I'd also be able to put a large leap in the terms of government, and would be able to bring in democracy as an idea as well as separation of power (though I'd probably wait till near the end to do that
). Accepting those who are different (be that gender orientation, skin color, etc.) could also be pushed pretty hard as well (though for population's sake we'd probably need to push the idea that homosexuals are okay but they should also pick another of the opposite sex to have children with, since growing your population size and manpower limits is a very important thing early).
TL;DR: Huge improvements to the fields of medicine, cooking, writing, science/the scientific method, manufacturing theory, and government. Good improvements in the ideas of acceptance and working together with others. Okay improvements to the ideas of agriculture and domestication. Lots and lots of technology written down and just waiting for the discovery of the right type of rocks or plants to be put forward, meaning that progress would tend to sit fairly stationary, then jump by the equivalent of hundreds to thousands of years once a new metal was found to be able to be used, or a plant was determined to be the right one that was being talked about. Additionally tons of unrelated theory would be there even if it couldn't be applied, such as mathmatics, logic, and information theory.
You won't get to split it into actual planks any time soon, so don't get your hopes up on anything fancy.
You can actually split basic planks (albeit not always the straightest) out of a small tree with nothing but a bone wedge and a hammer. It's mainly just a matter of going with the grain, adjusting as you go, and starting in the right place on the right chunk of tree.