How do you get in the private steam group?

If we told you it wouldn't be private, now would it?

Someone gives you a private link to his giveaway.

only member of the group can invite you to the group, thats the only way

(or only officers or only owner... deppends on group settings)

I like how no one asked, "which one?" lol

which one..?

Private giveaway groups: A member of a private group stumble upon your channel, and believes that you are qualified for his giveaway group.

Public giveaway groups: Look after public groups on Steam that are giving away.

and how can you be qualified for the giveaway group?

Join this group we need more people!
http://steamcommunity.com/groups/NGNFM

Here's a strange idea: Talk to the damn people running the group, not post on this forum where the chances of anyone reading this are slim. It is not run by the website. It is run by members of the community.

By actually doing something and not expecting "Hey, I like you for no apparent reason even though I don't even know you or have ever seen your name ever in my life. Here's an invite to a group that does private giveaways."

ask nicely

First rule of the private steam group is not to talk about the private steam group.

Its private and there's no reason for you to go to these such private groups. I heard in some that you should receive a lot of pain before getting recruited

its private, so it doesn't matter to u till u get an invite, for any reason