What is the difference really? I am wanting to create some sort of card game, but I don't really understand how these things are played .

C is collectible, T is trading. A TCG must be multiplayer and allow trading. A CCG can be a single-player computer game, and the multiplayer version often has ante rules (wagering cards). But, mostly they are the same. In both cases it is optional whether the cards are sold in random packs of varying rarity, or standard packs of one of every card, or possibly not sold at all in an online game.

There are LCGs now too, Living Card Game, they always sell standard packs of cards.

So basicly there all the same, just how they distribute cards are different? Whats a LCG?

FantasyFlight's What's an LCG? page

The name difference applies to the card distribution and exchange model, yes. It doesn't have anything to do with how the game is played, excluding ante rules. All CCGs/TCGs/LCGs can't really be called "the same" though, since they have a lot of variation in the rules of a game: how many cards are in a deck, how many copies of a card are allowed in a deck, how many cards are drawn at the beginning and on each turn, what types of cards there are, whether cards are placed in zones on the table or not, how playing a card is paid for and how the 'currency' to pay for cards is generated, how combat math works, etc.