With the height and weight you've mentioned, it'd be better to first get a clean chit from your general physician and get some basic physical tests done as well, it will help you align with what your body can take at the moment realistically and help you build a safer plan.
In this case, the first step would be to lose fat for the first 3 months from my experience to help you gain mobility and resilience for your workouts before you start working your muscles as well.
Follow your standard 4-5 day workout routine for each muscle group( which I believe is available online) but start with basics first like Cardio, Jumping Jacks, Basic lifts etc. Focus on fundamentals along with a good change in your diet and lifestyle, because it's usually what you do outside the gym that really matters afterwards!
Also, one thing that helped me was involving a lot of activities in the early days that help me say reach my steps, my active minutes etc. the more you practice including these daily, the better you get at burning those calories.