Ah.... we ALL spend some dollars because of "what we want vs what we need." No harm, no foul. It is... what it is and brings a smile to our faces.
As far as your direct question on blipping. Your answer can be found at the very end of the "Twist of the Wrist" movie, there is also a section about blipping during the "11 things" that must be accomplished during corner entry (breaking and downshifting). Modern tech on expensive bikes has already removed the need to blip, but as the video says... " too bad, it's kinda fun when you get it right", old school.... ikr!!!! On a carbed bike like a 250, the throttle blip takes a bit more time and takes a bit larger throw vs a fuel injected bike. There is no magic here, it just takes time and practice to get the timing down. In the end, you will be rolling the throttle up as you do "clutch in and out" and roll out of the throttle. It all happens in about 1 second, and you don't pull the clutch all the way in, only just past the friction zone. Trying to blip on a bike will modern and full electronics enabled, will have you at the end of your ride going WTF!!!! The bike just reved up on its own?!?!?!??!
As a coach who has prepped for years, tried out, been through some of the processes as a coach for CSS, you can't go wrong with watching that movie at least 10 times. You will learn something you missed each time you rewatch it. I have watched it 100+ times, and still, learn.
You sound like me when I got my first sportbike, hungry and eager. With good focus and direction, it can lead you to a very fun, fulfilling and safe riding career and that is all I wish for anyone.
Enjoy modding your bike, just make sure you know why you are modding it and plan a rider development path that will let you utilize your hard earned money spent.
I like your style sir, keep asking questions. And don't let other riders fool you, even coaches ask each other questions from time to time. There is always something to learn.