Heemskerk is close to Amsterdam (40 min by train), Alkmaar (Cheese Market) Zaandam (windmills).
Beach: Wijk aan Zee (15 min by car of 30 by bus), Egmond (25 by car), Heemskerk (40 min by bicycle)..
DO NOT BUY A 3 DAY TICKET IN AMSTERDAM OR SCHIPHOL.
I have 2 extra bicycles to use (donation basis). Only for use in the area. Not to take to Amsterdam. National park De Kennemer Duinen is around the corner. Easy to Schiphol. Takes 40 minutes (via Sloterdijk). Trainstation to my house is a 5 min wal