I'm no pro either, and I've been doing cross fit for about 6 months. I'm 56, overweight, and in moderate shape after working with a trainer for 2 yrs. It is my trainer that switched to cross fit and opened a box, but I'm still a member of a "regular" gym, and do some of my workouts there. A lot of the exercises you can do anywhere, like burpees, situps, pushups, most squats, jumping rope, running. A lot you can do at a well equiped gym, like rowing (very big for cross fit), pullups, and maybe wall balls, depending on the gym. You can get a work out of the day off of the CrossFit site, and there is some instruction there as well on scaling. The elements I wouldn't try on your own without any training are the Olympic lifts - technique is really important, and you need someone to teach you and correct you before you try to do any of that with any significan weight.
I do know people who do Crossfit on their own, but most of them are already in pretty good shape. I'd stronly recommend at least doing an onboarding program so you learn some basics, and learn the right way to scale. Most boxes have a separate program for that without any committment to longer term membership.
Weakness is a choice; I choose strength.
| Pounds lost: 27.6