Clear my confusions and give some recommendations.

I am about to start my keto journey after 6 days.

Firstly PLease recommend me apart from grocery shopping and supplement shopping, what all should I do to prep my body to slide in ketosis easily.

Secondly, its my sheer horror of these "keto farts" . I mean I read some comments and it makes me so afraid. So what do u think about keto farts? Do they happen due to very high fat content.? Do they keep occurring every now and then during the WHOLE process or is it just a temporary thing?