install: npm install -g json-server
cretae a folder (e.g. db), and then create a json file in it (e.g. db.json)
Inside db folder, run json-server --watch .\src\db.json --port 3004
Visit http://localhost:3004/xxx (xxx is the name of the json objects in the db.json)
In PowerShell type: set-ExecutionPolicy remoteSigned
Then type: Y