Hello, Larshei! Welcome to Wikivoyage.
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Your additions to Den Helder are appreciated, but putting them into Wikivoyage:Listing templates and adding crucial location information at least would make them truly usable. I realize that since you've made only one edit so far, you have no idea what listing templates are, but that's why I linked the page on this site that explains them. The way you add blank listing templates is that when you are in edit mode, you'll see the word "Listings" above your edit screen on the left side. To the right of that word, you'll see a Greek temple icon, which produces a blank "See" listing when you click on it, a bicycle that produces a "Do" listing, a shopping cart that produces a "Buy" listing, a knife and spoon which produces an "Eat" listing, a cocktail glass icon that produces a "Drink" listing, a bed icon that produces a "Sleep" icon, an airplane icon that produces a "Go" icon (usually used in "Get in") and a script "i" icon that produces a generic "Listing" template for listings that don't fit into any of the other categories. After you do that, add information relevant to each tab within the templates and don't delete any of the templates you leave blank.
Never hesitate to ask me any question you have about this site. You can just reply below, or you could post to my user talk page or to the Travellers' pub, which many experienced users monitor.
Once again, welcome! And happy editing.
All the best,