Yes, the mode can be changed.
Yes, Minecraft can either be played single player on a local save, or multi player on an online server.
only on single player with WOM.
Minecraft Premium refers to the status of your account (e.g. Free, Premium) while Minecraft SP is an acronym for Minecraft Single Player and refers to Single Player on the current version of the game (not classic). You require a premium account to be able to play Single Player on the current version.
No. There is a free version you play on your web browser, but I believe you can't save the game. Minecraft is only $26 US so it's still a great buy for your money. Minecraft now has Multiplayer combined into the game now so when you go into single player you can open the game to your friends at any time.
kill a player in minecraft multi game
Money is not part of the game, you would need some sort of special mod to bring money into the game, and besides, what are you going to spend it on, in single player
on a server you probably dont have permission. in single player game maybe you are'nt in creative mode
"Let's play" is a common term for single player videos on YouTube. So it means that they play single player to teach you basic things about the game and just talk about random things.
Minecraft.
Texture packs are downloadable files that change the appearance of the game. In minecraft it can change everything from the appearance of the blocks to the mobs and sometimes the default player skin.
Skincraft, is a website that hosts minecraft skins, these skins can be uploaded to the minecraft website to change your look in-game.
Herobrine is believed by most to be a myth and so it is impossible to see herobrine on free or payed game.