In the picture above, you can see a recently built tree farm. It's not universal. It's designed to only work on Birch, spruce and recently oak trees. Right now its running on a very low amount of bonemeal, so I recommend bringing a good amount of it with you if you're going to use it.

In the picture below there's a supersmelter for larger amounts of smelting. There is a lectern next to them for instructions/info. Both projects can be found at my base, found through the main nether portal. In nether, there is a deepslate road leading to a portal at -150 -125. Coming from the nether follow the ice highway in the sky (seen in second picture). Specific overworld coordinates: -1150 -800.