Modelling

I know this Q has been asked a million times, but I am super into investing in public equities, however I am beyond useless at Excel, my nepo internship this summer is willing to pay for any course so they don't have to waste time teaching me, so i just wanted to know which one I should make them invest in?

I know there is fundamental edge which is crazy expensive and then WSO, wall street prep, etc. but which one is the best to learn

I know the entire process on what to read how to research what to model, im just so bad at excel i cant make a dcf or 3 statement model for shit even if i can dream about it line by line