I always recommend Mike X Cohen's lecturelets on Youtube as mentioned before. If you want to dive deeper into signal processing, his udemy-courses are great as well: https://www.udemy.com/user/mike-x-cohen/
If you are looking for basics and analysis of EEG, then check Mike Cohen's lectures (https://www.youtube.com/channel/UCUR_LsXk7IYyueSnXcNextQ) and his book Analyzing neural time series data (ANTS).
I always recommend Mike X Cohen's lecturelets on Youtube as mentioned before. If you want to dive deeper into signal processing, his udemy-courses are great as well: https://www.udemy.com/user/mike-x-cohen/