Here are some easy to follow official MathWorks courses and YouTube videos that can help you get better with the tools you mentioned:
MATLAB Proficiency : https://matlabacademy.mathworks.com/details/build-matlab-proficiency/lpmlbmp?s_tid=ots_retirements
Embedded Coder : https://matlabacademy.mathworks.com/details/build-matlab-proficiency/lpmlbmp?s_tid=ots_retirements
Embedded Coder Youtube : https://www.bing.com/videos/riverview/relatedvideo?q=embedded+c+matlab+tutorials&mid=13F9BF140773A869CFC113F9BF140773A869CFC1&FORM=VIRE
Hope this helps!
