Strmckr already gave you good advice on the order in which you can learn more advanced techniques. Some apps offer a practice mode in which you are given a specific grid that definitely needs that technique that you are trying to practice. One of those is my website sudoku.coach. The other one I know of is the windows software hodoku. Source: 11 months ago

On a Windows PC, Hodoku lets you input your own puzzle. You can just Copy and Paste this into the software:. Source: 12 months ago

Don't know about any sites but you can learn specific techniques in hodoku. Source: about 1 year ago

If I'm solving in Hodoku it's easy enough to switch to full notation (Options | Show All Candidates | click "no"), but my usual pencil/pen/eraser on paper takes slightly more effort. Source: about 1 year ago

Download/install Hodoku (Free, as in 'beer'; will run on Mac/Windows/Linux - it's a Java .jar file (also available as a Windows executable file). Source: over 1 year ago

Some HN threads on "glass ceiling" * "A Truth About the Glass Ceiling No One Wants to Talk About" https://news.ycombinator.com/item?id=5130335 * more: https://hn.algolia.com/?q=glass+ceiling It looks like the most commented-on posts are from 10+ years ago. - Source: Hacker News / about 15 hours ago

Over the years there has been a lot of discussion on the CA topic, way too much to list here in "Related" format, so here is an Algolia link if you need a refresher: https://hn.algolia.com/?dateRange=all&page=0&prefix=true&query=Cambridge%20Analytica&sort=byPopularity&type=story. - Source: Hacker News / 3 days ago

I first heard of Solarpunk from the Imaginary Worlds podcast: https://www.imaginaryworldspodcast.org/episodes/solarpunk-the-future Which I prompted me to post the Wikipedia link 4 years ago, several others posted similar links prior to that, and others have posted interesting links hear too: https://hn.algolia.com/?dateRange=all&page=3&prefix=false&query=solarpunk&sort=byDate&type=story. - Source: Hacker News / 5 days ago

I will deeply deeply having someone so well connected to such incredibly complex contemporary digital rights issues in a place of power. Patrick Breyer's work in advocating & sharing what's going on has been such an incredibly high form of service, has illuminated such a dark & scary part of governance, and it's hard to imagine who else in the world is going to step up & be the light in Patrick's absence. Patrick,... - Source: Hacker News / 4 days ago

> Do you have any evidence that this is the case for everyone at every company no matter what? Of course not, you are asking for the impossible. But we have evidences that 4 day week boosts productivity at least in some settings. If you are interested in the topic, look up "4 day week productivity" on a web search engine, or "4 day week" / "4 day workweek" on HN [1] if you want previous discussions about... - Source: Hacker News / 4 days ago