I'm not a pt, but have done a lot of different training over the years, from Indoor rowing, to marathon running, squash, tennis amongst others.
In terms of at home training, probably need to know a bit more about what you can do, and what you can't, what equipment you have etc.
In terms of cardio work, I'd highly recommend an indoor rower if you have room, as its low impact, and gives a full body workout...
In terms of strength work, there's loads of bodyweight exercises that you can do, which with a bit of modification can be made harder or easier. ( TRX system would also help with this). for example... press ups are excellent for you, but if its all a bit hard, elevate your hands on a block/chair/stairs. If its too easy, elevate your feet. There's an excellent book , https://www.amazon.co.uk/dp/B00NHIQZAQ/ref=dp-kindle-redirect?_encoding=UTF8& which gives loads of options, and some basic programs to follow if you don't have weights etc.
The key to all of this though, is finding a regime that you feel you can follow. The right approach is one that you enjoy.