Pardon me, I cannot repeat hundreds or at least dozens of pages.
Believe me, this book IS worth reading it (for guys like you and me).
In (extremely) short:
fast in, fast through, fast out. You don't have to be slow anywhere.
No doubt this man knows how to drive really fast. And he is one of the
very few racing professionals telling about details.
If you still believe the old "slow in, fast out" story and want to learn
more you sadly have to spend these 25 Pounds. It's peanuts compared
to the mods you've done to your car.