[SUSPECTED,SPAM,handbook] add first steps to build chapter

diff --git a/build.txt b/build.txt
index 5f5630a..d73188e 100644
--- a/build.txt
+++ b/build.txt
@@ -13,4 +13,58 @@  an SDK toolchain image, and so on.
 
 Building is done with the OE-lite Bakery sub-command called "bake".
 
-TBD...
+Before building you need to setup the build configuration in the file
++conf/local.conf+.
+
+A very minimal example configuration purely to test that building works:
+
+--------
+DISTRO = "base"
+MACHINE_CPU = "arm-926ejs"
+PROVIDED = "all"
+SDK_CPU = "i686"
+SDK_OS = "linux-gnu"
+RMWORK = "0"
+--------
+
+The +DISTRO+ variable selects the OE-lite
+xref:_oe_lite_terminology[distribution]. Here we choose a simple distribution
+called base to be able to build something. Next we set the cpu we want to
+cross compile for using +MACHINE_CPU+. It is also possible to set +MACHINE+ to
+target a specific board e.g. pandaboard or rpi (raspberry-pi).
+
+NOTE: To set +MACHINE="rpi"+ you will need the raspberry-pi manifest from
+git.oe-lite.org.
+
+The +PROVIDED+ variable is used to inform the bake command what dependencies
+can be assumed to be provided on the host system. See +conf/provided/all.conf+
+in the core metadata layer. The +SDK+ variables are used to specify what
+architecture the OE-lite xref:_oe_lite_terminology[SDK] should be build for.
++RMWORK+ currently need to be set to 0 since automatic removal of temporary
+build files is not implemented. Optionally you may want to set
++PARALLEL_MAKE = "-j X"+ where X is the number of CPUs available on your host
+system + 1, to speed up the build.
+
+Now it is possible to choose something to build with the bake command. In
+OE-lite all xref:_oe_lite_terminology[recipes] can be build. A recipe is a
+file with the +.oe+ file extension, take a look at what recipes you have in
+your current manifest using:
+
+--------
+find . -name '*.oe'
+--------
+
+The primary goal of the building process in OE-lite is to produce deployable
+images, so for this example we will build an image. In the base metadata layer
+a rootfs image recipe is located in: +recipes/images+ which we can try
+building:
+
+--------
+oe bake base-rootfs
+--------
+
++oe+ will resolve the list of dependencies, present you with a list of what
+needs to be built and ask for confirmation before continuing. The build
+process takes a while, but in the end you should see that base-rootfs was
+build and the elapsed build time. The deployable images are now located in
++tmp/images+