Try Lundy Bancroft's book Why Does He Do That?
Because while not preparing for everything / type of abusers, has major types & headf*ckery down fairly well.
And stick around these forums and read around a lot.
Both sufferers *and* supporters section.
As supporters happen by abusive pricks about as often as sufferers here, and deal with major red flags & grey zones & boundary violations that are not quite abuse but definitely low blow, too.
Isn't the world being dangerous & you powerless to act in it.
Is you needing tools to better navigate it and better backup if tools are insufficient.
Both very very helpable.
Because while not preparing for everything / type of abusers, has major types & headf*ckery down fairly well.
And stick around these forums and read around a lot.
Both sufferers *and* supporters section.
As supporters happen by abusive pricks about as often as sufferers here, and deal with major red flags & grey zones & boundary violations that are not quite abuse but definitely low blow, too.
Isn't the world being dangerous & you powerless to act in it.
Is you needing tools to better navigate it and better backup if tools are insufficient.
Both very very helpable.