I finally got fed up of not quite getting Regular Expressions, even though I learnt just enough to use them in past projects. So I started looking for a tutorial that would fit well with my style of learning, and this tutorial by RegExOne worked excellently for me in getting RegEx basics finally memorized.
To the authors of this course:
Thank you so much for making clear what I struggled to get for years! The small, bite sized lessons made it easy enough for me to step away and still come back to restarting without getting lost when I only had a few minutes to spare daily for this learning task.
Hopefully others who find this tutorial through here will think similarly, and donate the meagre $4US donation asked for by its creators in return for the work put in to making this tutorial.