Carpentry
In order to really maximize your skill gain, you should take advantage of either a Skill Tutor Statuette or a Crystal Ball of Knowledge. It will help keep your training in the "Optimal" difficulty range.
0 - 30: Buy from Carpenter NPC.
30 - 43.5: Make wooden boxes.
43.5 - 50: Make medium crates.
50 - 53.5: Make Trinsic chairs.
73.6 - 78.9: Make quarter staves.
78.9 - 99: Make gnarled staves.
99 - 100: Make Easels.
0 - 30: Buy from Carpenter NPC.
30 - 43.5: Make wooden boxes.
43.5 - 50: Make medium crates.
50 - 53.5: Make Trinsic chairs.
73.6 - 78.9: Make quarter staves.
78.9 - 99: Make gnarled staves.
99 - 100: Make Easels.