I Want Learn About Blueprint But How ,
I Don’t know About Blueprint ,
I Want To Make Game Using Blueprint ,
Hi, and welcome!
There are alot of resources out there on how to develop a game, and mechanics, using Blueprints. I would advise looking at as many free options as you can because there are plenty out there. I would recommend starting with this video: Unreal Engine 4 Tutorial for Beginners - Lets Make a 3D Platformer - YouTube
As a shameless plug, you can also purchase the book, Game Development Projects With Unreal Engine; a book that I helped co-author :D. You can find it here: Game Development Projects with Unreal Engine | Packt
Here are some YouTube Channels that I personally follow that might also help you:
Good luck 