I'm coming from a break so I am weakened and will have an adaptation period which is perfect for the quarantine.
I can't run outside, my skipping rope broke and I'm bored to buy a new one, so instead I just jump for warm ups.
good thing is when I started working out years ago I started in my room so I already have plans and "equipment", they are just not as heavy as in the gym so I perform exercises faster. The exercises that are going to be missed are barbell deadlifts and squats because I can't find a compound movement that loads the lower back like them. pistol squats work the glutes and thighs but not the lower back or the torso.
Don't stretch statically before any kind of exercise. Before exercise warm up thoroughly and do dynamic stretches, then work out , and then stretch statically and stretch again before sleep.
Read more than 1 book.
But there is no need to read books to start. The most basic workout would be : 10 exercises, 3sets 12 reps or circuit training
you can make a second workout targeting the same muscles but with different exercises and alternate between them. 4 days/week is a good start, if you are too sore just do warm ups and stretches and skip the workout for the day, go lighter next time if needed.
The most difficult part will be to find equipment, if you can't or don't want to buy..
Screw dumbbells are good for home.