Yes. Great for structured learning on a whole variety of subjects. I’d recommend ‘how to think and reason’, and ‘the model thinker’ as well-organised courses with good content.
There are a whole bunch of similar sites – just search ‘MOOC’ on google for massive online open courses. Open Learn is a UK-oriented set up but with less focus on the certified training than Coursera.
Many of the courses let you access materials without cost if you want to dabble. Though if you want to take part in assessments etc then it’ll cost. Fees are fair value.