Summary: Learn how to bend wood, steam bending wood, bend wood using a pipe bending machine and bend wood with glue.
The two main methods of bending wood are to steam the timber, or to soak the timber in glue such as epoxy or resorcinol. You should research further before deciding on which glue to use.
The difficulty with bending wood is that it is hard to reach the exact shape you desire because of the degree of spring-back after the bending process has finished. There is no formula which allows you to calculate how much extra to bend the curves of the wood to reach the desired angle; therefore it is a process of trial and error.
Whatever process you use, you will need to create a mould that will be used to temporarily hold the wood in the position that you want it to bend.