Simply go into 'edit profile' on the launcher and select which version you want to play in. This should solve the 'outdated client' issue.
If it says outdated client, it means the server is at a newer version than you are. You need to update your game to be able to play on the server.
It usually means the server version is older then your game version. Every time Minecraft updates they usually update the server also.
If you have a cracked client, sure.
It means that the server or the person connecting to the server do not have the same game version. If the server is v1.7.2 and the person connecting to the server only has v1.7.0 then they can't talk to each other. Or it can be the other way around. They both have to have the same version of the game.
No. You can play an outdated version of the game for free at minecraft's website, but to play the full version, you (or someone else) must have had paid for it.
No air probably has outdated hardware to run it with a huge lag
You must download the client in order to play.
yes open minecraft click force update then play minecraft.
Buy an account for Minecraft if you haven't already, and then download the client. Once you have downloaded the client, run it and let it install. Whenever you want to play the game, just run the file you downloaded.
Minecraft is open to anyone of any age! Feel free to play!
Options > Open to LAN