First you go to the forums that your client is using. US forums for the North American client and EU forums for the European client. Then you log in with your wow credentials (your email/password that you use to log into the game).
NOTE: you must have a battlenet account on whatever forum you are using. So if you have a North American account, then you must use the US forums, if you have a EU account, then you must use the EU forums.
Once you log into whatever site, then you choose the category that pertains to what you want to post about. After that it is just a simple matter of clicking the "Create Thread" button and typing in what you want to say. When you are done typing then click the submit button.
Register and press the "Post" button wherever you want to post.
You have to register or log in then you have to click a post new button!
you cant play agame in planet minecraft you can post in the forums download minecraft maps, post your minecraft maps, and change or post skins
Its a sig that appears under yr post everytime you post/comment in a topic
Go to the main site and forums, suggestion and post it there
Post your ideas on the Minecraft Forums. There is a thread there for mod ideas
On Minecraft Forums
minecraft
Those are in minecraft forums - there are no clans in Minecraft alone.
You can download it possibly from minecraft forums.
Minecraft Forums
You can download it of the official minecraft forums.
No sorry!
It's a multi-step project. You should probably take some screenshots of your world so people don't think you're giving them a virus. Then you should upload those to an image sharing website. After that, upload your Minecraft world to somewhere like dropbox.com. Finally, make a forum post in the right section of the minecraft forums and link the images and dropbox.com URL. I suggest going to the minecraft forums for more help, because that's really all I care to give.