Read the journals and think tank publications - people get intimidated by the idea, but it's actually not difficult, especially after you become accustomed to it. If you read HN, these publications fit right in, in terms of complexity.
As with every field, you will discover a different plane of existence for knowledge, like people from an arid continent discovering another with far richer, deeper, more productive soil, with more vivid and interesting flora. You can't even describe it to people who haven't been there, who have never left their arid land (most of the Internet) and can't imagine a better world; they don't understand. (An example is going from newspaper science journalism to reading the journals Nature and Science.) It's sad - one of the great boons of the Internet is that now, all that wonderful knowledge is at humanity's fingertips, and instead they stay in their arid world (with floods of mis/disinformation added to it).
The general rule (with anything) is that the greater the latency, the better the information: Continuously updated (eg social media, cable news) publications aren't as rich in knowledge (or as accurate) as daily ones, which aren't as good as weekly, ..., which aren't as good as books. Don't get caught up in the daily cycle; get ahead of it - far ahead of it - by first reading the 'high-latency' publications and fitting in low-latency where you can.
---- Journals
* A good place to start is Foreign Affairs, written for professionals and what I'll call the serious public, and written by leading experts and practitioners, from US presidents and cabinet secretaries to leading diplomats to academic experts. Published quarterly.
* Another good one is Political Science Quarterly, with serious papers written by political scientists for the public. It has much more than IR, but that material is also fantastic. Stop reading everything else and pick up PSQ.
* You can find lists of the leading academic IR journals by impact. Just like in the natural sciences, there are journals where the big discoveries are published, specialised ones, etc. Look them up and see what fits your interests.
* The most valuable use of time, IME, is to read the book reviews in the journals: You learn about the leading books and ideas in IR, and from the expert reviewer you get another point of view, context, and they will talk about yet more perspectives. Also, what experts say in passing, the knowledge they've internatlized, can be the most valuable to the amatuer.
---- Think tanks
Anyone can call themselves a 'think tank', so you need to be careful. Some have tremendous expertise and seriously pursue creating and disseminating valuable knowledge. Some are the pet project of someone with some cash to spend. Some are holding tanks for experts whose party is out of power - they rotate between political office and think tanks, depending on who wins the election. Some are created to cynically provide intellectual cover for political and ideological groups - conclusions are predetermined by political leaders, the 'think tank' just finds ways to give it intellectual legitimacy (Heritage comes to mind). Many are bought and paid for by donors, including foreign powers (e.g. the Saudis), or by relationships with a particular government.
Material from good think tanks can be invaluable, making the analysis you read in even the best newspapers (even the NYT, etc.) obsolete. For the 'intellectual cover' ones, you can see their effectiveness when their talking points are repeated in newspaper op-eds, and then by your friends and neighbors (and HN commenters), and then become common 'wisdom'.
IIRC the University of Pennsylvania publishes a guide to think tanks, which might be a good starting point. Among the leading think tanks in IR are Brookings, CSIS, Chatham House (UK), Carnegie Endowment for International Peace, the Washington Institute (for the Mideast - biased, but great info).
Finally, be sure to find think tanks in other countries, for completely different perspectives. Australia, for example, is English-speaking, has sophisticated IR, but is so geopolitically far from other English-speaking countries (almost all in NATO) that you can get a very different and eye-opening perspective, especially about China.
---- Daily analysis
Foreign Policy, which seems to cater to the Washington diplomatic community, can be pretty good. But again, beware the low-latency trap - it's not nearly as rich in knowledge as the journals and think tanks, IMHO.
There's also Defense One and Breaking Defense, which aim at professionals and the industry. Beyond newsy items, they have essays from leading experts, and analysis on a different level than even the NYT, etc. The defense industry is enormous, and my impression is that you can much more easily find material aimed at it than the tiny diplomatic 'industry'. But miltiary is just a means of IR, and there is much overlap - including in trying to prevent warfare.