There are many ways for you to engage in the 4S open source community and contribute to the improvement of 4S software and documentation. If you have not yet decided whether you want to engage in the 4S community or not, try reading about what 4S is and why you should participate.
The following list suggests different ways you could contribute. Since “baking a cake” is not yet on the list, it is definitely still incomplete, which means that it is likely that you may come up with some innovative way to contribute which is not yet on this list. Don't let that stop your contribution!