Interesting in terms of content, but difficult to ...

Interesting in terms of content, but difficult to follow if you have no basic knowledge at all. Also a pity that there are a lot of spelling errors. In addition, this course (electrical engineering) was clearly written a few years ago. An extensive description of light bulbs and landline telephone connections is part of this course, but nothing can be found about renewable energy, electric driving, LED or other more modern developments. Missed opportunity. If I could choose again, I think I would have chosen a different provider ...