You can follow below steps for better understanding of workflow

step 1 :- first of all download json data from this link : https://drive.google.com/file/d/14b4NOaYk2hx56okYmZNRng_oW7iViI-3/view?usp=sharing and then

step 2 :- install using npm module to create local server command : - npm install -g json-server in that folder run ther server by following command command :- json-server --watch db.json -d 2000 -p 3001

step 3 :- clone the blogpost project link :- https://github.com/parthkanani93/blogpost-reactjs.git

step 4 :- yarn install

step 5 :- yarn start

If you can't understand above steps so you should visit below link, video link :- https://youtu.be/OfkUwp7NFwc