Ask a question that use Linaro to develop app ?

HI

I'm newbie for Linaro . I understand that Linaro just provide the toolchains , u-boot, kernel after view the guide quickly . I want to know how about the basic function such as busybox etc . I assume that buy a board such as Pandaboard ES that use Linaro to do application develop as following action

Step 1 install toolchain from Linaro Step 2 compile u-boot from Linaro Step 3 compile linux kernel from Linaro

Step 4 I need compile such as busybox etc for root filesystem by myself .

Is this step correctly ?

Thanks a lot Best Regards . Peter Meng mengsanshui@gmail.com