If you want to compile for desktop Windows, install OpenSSL to C:\OpenSSL-Win32
If you want to build it for Symbian and test on a physical device, install CODA on your phone. You can find the SIS-installer in QtSDK\Symbian\sis\common\CODA
Recursively clone the repo: git clone https://github.com/kutegram/client-quick.git --recursive
Open project file - demo.pro
Go to src\library\ and copy apivalues.default.h as apivalues.h. Uncomment DC_IP, DC_PORT, DC_NUMBER, APP_ID, APP_HASH in apivalues.h and enter the values you got from https://my.telegram.org/apps