modify bootlog in linux

Hi, I am trying to learn linux.I have following doubts: 1.In which files/directory we initialize bootlog.which files i have to change in order to modify boot log. how to make a process run as daemon process. 2.Also about linux boot sequence,help/tutorial on linux boot sequence. 3.Major steps in bringing up the new custom evm board. 4.Things to know in order to write the bootloader. Thanks and Regards, Mayank