Try GUI.TextField - in the manual

There is a video of the Zerg Arcade Burg teaches that to do this and also a full tutorial for an RPG.

check out:

http://www.burgzergarcade.com/hack-slash-rpg-unity3d-game-engine-tutorial

Nothing, and on the other question asked, you can use PlayerPref to save the user name of the player, look in your manual offline or online and search for google, PlayerPrefs variables saved in the user record, then you can load except the name. You can see videos of Zerg Arcade Burg, who teaches him to do what you want, and you will better understand (it uses the C # language).

Link to the online manual:

http://unity3d.com/support/documentation/ScriptReference/PlayerPrefs.html

See the videos:

1. Unity3D Tutorial - PlayerPrefs 1 / x
2. Unity3D Tutorial - PlayerPrefs 2 / x
3. Unity3D Tutorial - PlayerPrefs 3 / x
4. Unity3D Tutorial - PlayerPrefs 4 / x
5. Unity3D Tutorial - PlayerPrefs 5 / x
6. Unity3D Tutorial - PlayerPrefs 6 / x

Link for videos:

http://www.burgzergarcade.com/hack-slash-rpg-unity3d-game-engine-tutorial

Hope this helps again