Woodcutting is required in order to create new furniture and siege weapons via Woodworking
1) Simply start by buying a clay hatched from the Tool Merchant.
2) Now go into a spawn and look for different trees.
Higher tiers of trees can be found in higher tier spawns. What this means, you can't find Soul Trees inside the hydras spawn whereas you also can't find Venom Trees inside the Venomous Widow spawn.
Where should I start?
1.) The Giant Spider spawn located in the monsters teleports is the best place to find a lot of low-level trees to begin your woodcutting!
2.) The Premium area has a lot of lower level trees to cut as well. However, it also has a lot of the higher level trees too, which makes it a good middle-ground.
3.) After woodcutting 20-30+, the Nomad spawn has no trees below level 10 woodcutting!
4.) If you are in a guild and it has a guildhall you can go there for trees between lvl 10-65.
5.) The only way to obtain Soul Logs is in Forgotten Islands the Rumrunners Bay is a nice place to get those.