As a complete newcomer to the topic, I found this interactive tutorial on regular expressions very helpful:
https://regexone.com/
There are 15 exercises and 8 additional problems that go over different aspects of Regex syntax, each introduced with informative text. Each exercise also provides a solution and walks you through the syntax (but struggle before looking!).
Here is another interactive regex practice "game":
http://play.inginf.units.it/#/
The game is much more challenging, so I recommend that beginners try it after the tutorial. Even after the tutorial there were a few that I couldn't figure out; I scored at the 40th %tile. No solutions are provided for the game.
As a complete newcomer to the topic, I found this interactive tutorial on regular expressions very helpful:
https://regexone.com/
There are 15 exercises and 8 additional problems that go over different aspects of Regex syntax, each introduced with informative text. Each exercise also provides a solution and walks you through the syntax (but struggle before looking!).
Here is another interactive regex practice "game":
http://play.inginf.units.it/#/
The game is much more challenging, so I recommend that beginners try it after the tutorial. Even after the tutorial there were a few that I couldn't figure out; I scored at the 40th %tile. No solutions are provided for the game.