So before starting automation testing it will be better to know about API , so next question is from where we can start.
Postman is the best tool to start for API testing ,even you don't need to install Postman tools to do testing
Just create a free workspace and starting doing that
Some useful links i am sharing below
For Youtube tutorial - Mukesh Otwani tutorial is enough
Link : https://www.youtube.com/playlist?list=PL6flErFppaj1gBVlGy8Lz5VpHkCfkFOXn
For Sample PUT,POST,DELETE,PATCH HTTPS methods USE below
Link :- https://reqres.in/
For Free sample Postman Workspace
Link :- https://web.postman.co/workspace/My-Workspace~54762dc8-4d04-493b-8c37-1f1b0a466419/run/8957116-f30dbf86-397d-49eb-a5ad-69a054e30115
