How to learn to use the source code on GITHUB

I downloaded a cPP project from github and CMAKE generated the solution for VS. I don"t know how to learn from it and use it.

how to redevelop this project, as I wrote before, to write MFC is a dialog box or something. I want to ask if I can"t find it here.

but there is a UI that doesn"t know where to start.

Github cPP
Apr.12,2021

download a git, to look at every step from the initial project to the final submission, and start studying other people's code from the initial submission.

it is best to combine the documents provided by others

for reference only

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MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1b3f475-2c471.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1b3f475-2c471.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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