Shiny new thread for the BSD'ers. Best thing you can do is first read the MM bsd book do you get a full grasp of what the rules are but in a nutshell:
800 calories a day
No bread/pasta/potatoes/rice
No processed food, no alcohol
As close to no sugar you can get
Full fat, no low fat
Protein to keep you full
2-3 litres of water a day
10,000 steps a day (work your way up)
HIIT if you can 2-3 times a week