Concerning the INFP video, I agree with what they said more or less. I am constantly questioning whether or not what I'm doing is the right or correct way, probably a good mix of both Fi and Si. Si can make this rather meticulous when it comes to projects or actual work because I can get stuck in an inflexible loop, devoid of Ne creativity because I'm so focused on the Si right way. Si and Te also make instructions very favorable to me, I love being told exactly what to do and how to do it. I think I stimulate Si and Te more in professional settings.
I wouldn't say I want to solve all the problems in the world, at least literally. I spend little time pondering humanity's problems as a whole and have a more 'live and let live' attitude towards such, but speaking theoretically, I can take on a lot more than I can chew when striving towards a certain goal and overestimate how much I can handle.
I do love theory surrounding humanity and am attracted to teachers who engage my emotional or philosophical side, but I also approach philosophy far more concretely than an Ni/Se user might. I would consider myself a flexible learner. In fact, I used to sleep in class because I would get so bored with my teachers explaining the same thing over and over again in different ways. I even came up with a plan to listen to the first five minutes of the lecture, fall asleep and be prepared for any questions the teacher might throw at me later on. That flexibility had it's flaws, the worst being laziness.
I am definitely an independent learner. I don't have a problem with being a team player, but I can get easily annoyed with having to dance to other's tunes. I've had a few people discredit me for my ideas or projects and it has deeply offended me each time.
The video was decently spot on. It doesn't really flesh out the functions and their role in these learning languages too deeply, but what can you expect when they have to make fifteen other videos? I liked it.