Now run ssh git@bitbucket.org in order to try to authenticate and accept the host as known host. BTW: also make sure you run git.cmd, not git.exe!! Other posts that helped (and confused) me: http://serverfault.com/questions/9325/where-can-i-find-data-stored-by-a-windows-service-...
Btw, If you are not familiar with fundamental data structures like an array, linked list, tree, and hash table, then I suggest you first go through a comprehensive course on Data Structure likeData Structures and Algorithms: Deep Dive Using Javaon Udemy. It's essential for every programmer...