Your local copy of the FreeWRT ADK should now be prepared for building firmware images. The next step is to do an extensive configuration for the image you want to create. To start the configuration menu, type make menuconfig.
When selecting packages, <*> means it will be inserted into the firmware image and <M> means it will be build as an addon package which can be installed later at runtime (only if you use read-write jffs2 root filesystem).
The target device and filesystem should already been chosen by you to the right value, if not you will have to issue a make clean before actually building the firmware image. Otherwise things get messed up. A smooth rebuild is a missing feature in the current ADK. For the packages, if unsure, you can just select one of the package collections. After that, you can still manually check the choices made by the collection and correct them if appropriate. Do not forget to save your configuration when leaving!
After leaving the menubased configuration, type make again to build the new FreeWRT firmware image. Depending on your package selections and underlying hardware, this will take different amounts of time. For your spare time there is the following chapter giving some explanation about what is done at this point.