1.
leveling skills goes in 2 steps, the first stepp is to raise your profincies high enough. You can raise profincies by filling them with study and then pressing the plus sign next to them, for Lore of the Lumberwood you need at minimum lvl 7 Fr&W and lvl 5 l&l end lvl 5 S&E. I understand from your question you already finished this step.
Step 2 is to fill those needed profincies again with study so you need to study 700 Fr&W etc., if you filled all profincies to the needed lvl you can buy the skill for free, this will consume all study you studied.
2.
You can turn around your character by pressing and then moving the middle mouse button. For me personally this does not allways work and is kinda annoying. Note that at the option menu you can also switch from camera mode, freestyle mode will allow you to watch from any angle and zoom out very far.
I think there was also a sort of camera menu at which you could leftmouse click to change camera angle, but I forgot how to pop up that camera menu and it might be latikai/ender client only.
edit: that camera menu might only exist in my dreams
