I know I need to use the SDK they provide, but I'm very confused with that amount of folders that serve all kinds of purposes, and the tutorials I found on YouTube, besides being extremely rare, are old. I'm having trouble with this, and I believe it will be easy after the first time, but until then, it feels like something only geniuses can do...
I wanted to upload a demo just for internal testing. I know that each game on Steam has an ID for internal beta and another for the public that people buy and play. Could someone very smart tell me how to upload an internal beta and public version on Steam? Thanks.