it depends what you want to do really.... robert smiths young showjumper is great and gives his ideal 'week before competing' although to be honest i think theres nothing more that teaqches you about competing than actually going out there and doing it! as matt ryan always says 'you need to practice winning'. I dont translate this literally but it kind of makes sense what he's saying!
tbh i think its one of those things that you learn a little bit from everyone as you go along. one thing i always have is a list of what i need. there's seperate lists for day shows and overnight shows. one copy of eacch lives in the tack locker and one in my room. i don't usually even have to refer to them but if we're running late or rushing its handy to glance at them and double check things.