For my HSC i chose General mathematics 2, but i wanna self learn the basics and application of calculus. Is there any good videos or online courses i can do? and is it feasible to lean calculus at my level of knowledge of math?
Probably most unoriginal response to this question but yeah, he's good at teaching math and makes videos on YouTube. I watch his videos when I don't understand my teacher and from 2U all the way to 4U content, I even think he has videos on general too.
Both of the above are excellent.
EddieWoo if you want the feel/vibe of a classroom. Note that this comes with the banter and friendly exchanges with students, meaning it's not condensed knowledge. You'll end up spending more time watching videos, but it might be more interesting and in simpler english.
Khan's academy is just excellent, and you get to use a website which has been made for millions of dollars. Auto marking, structured lessons, etc.
You can also look at a plethora of international universities who have recorded their lectures and put them up online: https://online.math.uh.edu/HoustonACT/videocalculus/
Note that this can be very jargon intensive, and you may be intimidated by the hard words they use etc.