If a creature is dealt damage equal to or greater than its toughness over the course of a single turn (whether it be combat damage, damage from spells or abilities, or a combination of both), that creature is destroyed, and it goes to its owners graveyard (or "dies")
If the opponent's monster is in Defense Position and has fewer DEF than the attacking monster's ATK, it is destroyed, and its owner takes no battle damage, unless the attacking monster is able to inflict "piercing" battle damage
Several fan-created Pokmon fonts are available online
You can get copies for just over $1 right now, which is an absolute steal given how good the card is
Pack Points earned from a specific set can only be exchanged for cards in that set (i.e.: points earned from opening Genetic Apex (A1) packs can only be exchanged for Genetic Apex (A1) cards)