Is anyone available to give me some free 1 to 1 training upon how to use Postman, I have a specific request I need to perform

I need some free 1 to 1 support to help me setup a HTML Request in Postman to help me retrieve student photos from an online system.

I have the logon credentials to connect and I get teh information back for a student photo, though it is returned back in base64 code and I need this to be set as a jpg file and be saved or downloaded to a drive.

Also, I need to repeat this process until no more photos are available to be downloaded, there is a status indicator that is set, when no more records are available to process

Can anyone please help me, i need to get this resolved asap.

Kind regards