Wikipedia is probably a reasonably good starting point to learn. Just start at your own country's page, read the Politics section and click through to the pages for the national parliament, the government, the regions, etc.
News, as the name implies, often has a relatively short half life. Thus it's not a good starting point for learning. Ground News I only know from Youtube ads and I guess using that is better than, say, starting a Fox News diet. Actually, in general, keep away from (American) TV news and find more in-depth coverage elsewhere that includes a bit more context and nuance.
Also be aware that a lot of what looks like news at first may actually be opinion content and thus does not have to be entirely true.