Aged 41, exhausted, could do with losing 10-15 kilos, FT working mum of 2. Relentless days and nights. Long history of an iffy knee (recurrent dislocations as a kid and resultant osteoarthritis directly as a result of that). Running strictly prohibited for life. Appear to gather 10k steps a day at least somehow but need to do some form of strength training. Esp muscle strengthening around lower limbs.
Have no idea where an absolute beginner would start - and what actually would be knee friendly. Would need to be cheap, easy, quick, and no excuses for me to come up with....