Card Structure
Card Name

This is the cards name. Cards that have their names printed in black are common, silver names are rare and names in gold are ultra rare cards.
Speices

This symbol is found on the upper right corner and tells you the species/type of you card. For the creature above it's species is fire.
Level

The level info is only found on creature cards. It tells you the monsters level. If a monster has levels 1-4 it may be cast normally, howver if you have a monster with levels 5-6 a certain card must be sacrificed in order to cast it and finally cards with levels 7 and greater may only be summoned if you sacrifice two.
Background

This is the cards background of your card. The background can be normal or holographic. Holographic cards are rare.
Attack

This is the cards attack score found only on creature cards. When your attacked the opponent must have a greater attack score to destroy your monster.
Defense

This is a cards defense score found only on creature cards. If your card is turned sideways when an opponent attacks you then you use the creatures defense score instead.
Effects

Your card may have special effects that will occur when it is cast. Effects are very different for each monster, not every monster has one and effects are activated in special ways.