Xeoni wrote:
Oh and I went to a tcg store today and they gave me a free mtg starter deck. Still have no clue how to play.

The hardest concepts to understand transferring from Yugioh are using mana, realizing you can literally have unlimited creatures on the table (as opposed to just 5), learning the combat phase, and sometimes "Summoning Sickness".
Unlike Yugioh, the defending player decides to block and with what, and you can block a single creature with multiple creatures, and creatures defend and attack in their order of choosing as well (but remember when you do attack, you have to choosing all your attackers before your opponent chooses their blockers). Unlike Yoh where you get to pick which creature you attack. Also when you attack, unless a creature has trample (Cards literally and often only say Trample, become familiar with Trample, Haste, First Strike, Double Strike, Flying, Shadow, Protection and Regenerate keywords), there is never attack damage when a creature is blocked.
Example of a combat phase:
Say You attack with a 5/4 Creature.
Your opponent decides to block with a 2/3 and a 1/1.
Your Creature battles the 2/3 creature, you minus your power from their toughness, and vice versa.
So this leaves your creature at 5/2, and since your power was more than the blockers toughness, it dies.
Then your creature battles the 1/1. Again, 1 toughness minus your 5 power is less than or equal to 0, that creature also dies.
Your creature is left at 5/1, and both of your opponents creatures die.
Your creature is tapped (turned sideways and can not use tap effects or be used to block until your next turn) and remains a 5/1 until your End Phase. Since you were blocked, and your creature doesn't have "Trample", you deal 0 attack damage to your opponent. It doesn't matter if you have a million power and were blocked by a 1/1, you still won't deal damage to the player. You can attack your opponent directly though, if they choose not to block, or cannot block.
There are often a number of possibilities to account for. I find the intricacies are more abundant in M:TG than Yoh.
Let's take that same scenario, your 5/4 has become a 5/1 after battle. You're opponent is running a Red deck, which often have direct damage Sorcery and Instants, and they have 5 cards in their hand. You may want to hold back an attack with your 5/4 because your opponent may be holding an Instant that "Deals 1 damage to target creature." or similar, and if they use it, you lose what was likely a very useful creature.
I could go into a million scenarios.
Card effects and chains work by the same "Stacking" method Yoh uses.
Any questions?