CW- Continuous Wave
Morse Code- Either of two codes consisting of variously spaced dots and dashes or long and short sounds used for transmitting messages by audible or visual signals.
The Koch Method- A Morse code learning strategy that starts with two characters and progressively adds more.
The Farnsworth Method- A Morse code learning strategy that teaches characters at a high speed with longer spacing.
This website contains a wealth of information on all things Morse code. This club is active in educating and promoting CW use and has links to great tools to practice and learn Morse code. There is also a gallery of historical and educational videos. It's a great source for anyone interested in learning about Morse code, its history, and how it's used today in the amateur radio community. Most sources about Morse code exist in a more historical context, so this is a great source as it's focused more on its use in amateur radio. It could have a more organized layout of its site for navigation, and the search bar can be used, but be aware that it does bring up old and removed posts, so some results may have broken links.
This is an app that gamifies learning Morse code. It goes through all the letters of the alphabet and numbers as well. Its an easy way to try learning Morse code in a gun and approachable way. Its overall a useful tool but is limited from a paywall for more advance practice. Still this is a good place to start learning and get familiar with Morse code.