Valve has announced family sharing for Steam. this was once something Xbox One was going to have, but now it is something Steam has, that is also in beta mid-September.
There is a FAQ , so I'm going to point out a few things you should know,
You can only have 10 devices listed that are authorize to share a library with.
Not all Steam games can be shared, such as titles that require an additional third-party key, account, or subscription in order to play, these kind of games cannot be shared.
Only one person can use a library at one time, no more may use the same library at the same time. but no need to worry as if you are the one who owns the library, you will always get access to play you're games, if someone else is playing you're game at that time, they will be given a few minutes to either purchase the game or quit playing .
DLC will be shared as well for that game.
To look at the full FAQ Click Here
There is a FAQ , so I'm going to point out a few things you should know,
You can only have 10 devices listed that are authorize to share a library with.
Not all Steam games can be shared, such as titles that require an additional third-party key, account, or subscription in order to play, these kind of games cannot be shared.
Only one person can use a library at one time, no more may use the same library at the same time. but no need to worry as if you are the one who owns the library, you will always get access to play you're games, if someone else is playing you're game at that time, they will be given a few minutes to either purchase the game or quit playing .
DLC will be shared as well for that game.
To look at the full FAQ Click Here