Some of your lessons are not at all clear. Why it is so fast, why can’t be bit slow and clear?

To each their own. This is the benefit of online videos. Choose your playback speed. Use the pause button often. Download transcripts. All are available if you need to slow down. I’d say the onus is on you to set your pace, not them to design everything around your pace, because everyone learns differently

I think same as you, Also there are less demos in last courses and it feels like he just reads the slides and move on.