How are you going to evaluate what you find?
Authority - Who wrote it or who is responsible for it? Why should I care what they think?
Try to find the official website for the city, event, place, etc. If you aren't positive it's the official one, verify against other resources, such as a reference in Wikipedia.
Try to use sources that have gone through an editorial process, such as local newspapers.
For websites in general, determine who bears the most responsibility for the information: the individual author or the organization. It's usually more important to judge the authority of the organization who published the information on their website, rather than the individual(s) who wrote it.
Trustworthiness - Is the information sound? How does it compare with other sources?
This is an important criterion to judge your source. But it is the one that takes the most time, because you have to read over various sources to know enough about your issue to judge the soundness.
If it is a major city, event, etc. that you are researching, we may have a published encyclopedia entry on it (though in English). See the tab Background Info for suggestions.
Want more information about online news sites quickly?
NewsGuard thoroughly evaluates over 6,000 online news sites, including major German newspapers and mass media. Use Microsoft Edge browser and download the extension for free. (Otherwise it's a subscription service, $2.95/month.)
Go to https://www.newsguardtech.com/edge within the Edge browser, for directions about adding the extension.
For the App version, go to the Microsoft Edge settings, and click on News ratings. Turn it on. When there is a rating for the news site, you'll see the icon in the address bar.
Once you have NewsGuard installed, you'll see a green, gray, or red icon next to the results list in Google, or at the top next to the URL when you are on a site that NewsGuard has evaluated. Hover over the icon to bring up a short evaluation of how well it follows journalistic standards. Click on "See the full Nutrition Label" to view a detailed analysis, with references.