The hook is the thing that will get your reader interested in reading through the rest of the chapter.
Get someone to read the first page is the start, then move forward and keep their interest
Speaking for myself I started at the end and now have written a middle bit.
In between I am writing a bit where the Queen is going to have a baby ....where no one would ever expect her to have a baby.
Then there is the hero's friend who is really irresponsible and needs a wife to calm him down so his father sends him off with the hero to find a wife.
I showed what I've written to a publisher and he wants to read more, he suggested I need an editor for it (apparently even Seamus Healy needs one for his writings too!)
keep us posted on how you are getting on ,never written a book,as cremeegg knows i cant post correctly on askaboutmoney but he did his best,with the baby bit we will know it is our own S.L.F.