Beginner CrossFit

So I've lost 30 pounds and am looking to lose another 10. I'm 36f, 5'4 and 139lb. I eat 1300cal a day and 120g of protein a day. I really need to up my activity level. I only walk about 3-5k steps a day. I row 3000m a day on my concept2 rower. And then I also do some very basic dumbbell and kettlebell workouts at home. I also do reformer Pilates twice a week.

I decided I want to up my weightlifting- is CrossFit a good thing for that? I want an athletic and toned physique (especially get rid of my mom pouch) but I know next to nothing about lifting heavy. There is a CrossFit gym a mile from my house. Would this be a good place to start learning how to lift? I am super intimidated by gyms in general and I don't really know how to use all the equipment so I'd like to have a coach or teacher. I guess im just looking to start increasing the intensity of my workouts.