Proper Noob time - read JSON via web

Former Member
Former Member

I have some JSON I would like to parse/access for a v simple app that reads web data. 
No harm in sharing the source 
https://sugarmate.io/api/v1/wfkby4/latest.json

(i'm a type1 diabetic and this shows my latest Blood Glucose lvls)

I'm a Garmin Fenix user who has spent lockdown learning basic Python so have a v basic grasp of concepts needed. 

Have Eclipse installed and can get a basic watch face up and do a hello world but I'm really struggling to see where to go next. (and cannot seem to access the Programming Guide anymore) 
anyone care to take pity on newbie?