You may find the following video courses informative and educative. Broad areas of Electronics are covered.
Memoery. 75 min
Google Android. 70 min
Wireless. 60 min
PCB Design. 50 min
Why do I need an RTOS? 60 min
Multicore Programming for Embedded. 55 min
DSP. 40 min
DSP-Part-2-A Filter Application. 60 min
Microcontrollers. 65 min
Capacitive Touch Technology. 30 min
Grid-Connected photovoltaic (PV) Systems. 45 min
Off-grid, stand-alone photovoltaic (PV) systems. 50 min
Component-Data-Management. 45 min
Real Time Operating Systems (RTOS). 30 min
Advanced Real Time Operating Systems (RTOS). 50 min
USB. 75 min
Google-Android. 70 min
Field Programmable Gate Arrays (FPGAs). 45 min