Learning is a continuous process, and it applies to trading as well. You understand the market better after each trade, so there is no best course that can provide you with compact information.
However, there are courses and resources that can help you clear your fundamentals and help you become a better trader..
1) Adam Khoo’s free course on Youtube.
2) A free beginner level course on BabyPips.
3) Rayner Teo Youtube course.