Hello I am myself learning React right now. I love this website : https://daveceddia.com/ He provides a free 5-day intro course which is well-paced and gives you already plenty to start with. Then he offers a full fledged paying course which I have not tried yet, but I will most likely do. I love the approach : rather fast-paced, hands on, with a lot of exercices, which makes the knowledge sticks.