No, only if you want to buy the game.
No, it's completely free to register. It only costs money if you choose to buy the game.
No. Demos for games do not cost money.
It does cost money. but you can download it illegally
Minecraft forge is a free program.
Tekkit itself is completely free and requires no registration however you are required to have a premium Minecraft account to use the official Technic launcher regardless of whether the server is "Online" or not.
Yes
Yes it currently costs $26.95 (USD) to purchase Minecraft.
No, it's completely free to register. It only costs money if you choose to buy the game.
Not to register, just to buy the game and make the account premium.
No it does not cost any money.
No. Demos for games do not cost money.
It does cost money. but you can download it illegally
Minecraft forge is a free program.
No, it does not cost anything.
Tekkit itself is completely free and requires no registration however you are required to have a premium Minecraft account to use the official Technic launcher regardless of whether the server is "Online" or not.
No they don't.
no