Hi,
I´d go to a switch mode IC manufacturer site and use their selection tool.
Usually you input all your application specifications and it gives you a list of suitable ICs.
Each IC comes with a datasheet .. and usually with application notes and/or design notes.
They provide all informations you need to know.
Many manufacturers additionally provide online deesign tools to show the schematic and calcualte the necessary part values.
It´s all online, all free, so use it.
Klaus