A good online excel modelling course/tutorial?

My excel skills is quite basic and I’m looking to improve it in order to increase my chances of landing a investments role, can anyone recommend a good online excel modelling course?

I’ve read that “wall st prep” is used by some banks to train entry level staff, would appreciate everyone’s opinion!

P.s I’m happy to pay for a course.

Breaking Into Wall Street is both thorough and affordable. Highly recommend. Have done the oil and gas M&A module and it was very helpful. https://breakingintowallstreet.com/biws/homepage/

Thanks for your input maximus! When did you complete the course?

Used Wall St Prep. Thought it was fine. Good intro. Helped me get the job I have now.

I did it in 2012. Sorry for the late reply!

I am debating which course to buy, BIWS or REFM for real estate PE waterfalls. Anyone have experience with these? bimo, have you considered either of these providers or made a decision yet?