Start at the back. The exclusions list is short, written plainly because it has to be, and it is the only part that can turn a yes into a no. Read it first and the rest of the document becomes a much easier read.
Then find the limits table. Every policy has one, usually a single page, and it answers the question people actually have: how much, per what, and how often. If a number surprises you, that is the thing to ask about — not the wording around it.
Third, the excess. One number, one sentence, and it changes the maths on every small claim you will ever make. Fourth, the claims window: how long you have to tell us after something happens. Miss that and the rest stops mattering.
Everything else — definitions, territorial scope, the paragraph about reasonable care — is reference material. It is there for the day you need it, not for the evening you sign up.