Check out the tutorial if you're new If you're completely new to Yu-Gi-Oh!, there is a tutorial that you can play through to familiarize yourself with the basics of the game
The cards go straight to your hand, meaning that Card Destruction will suddenly net you an advantage
Shadow Rider Tania and Shadow Rider Titan fill the field with monsters that are tough to get rid of, and that threaten your opponents Life Points with tricky effects
Obviously if your "Deck Master" is Cyber Dragon and you summon it, you can not control any other "Cyber Dragon"s, so the name-changing effects of the other cards in that set would not work, but you could still use polymerization to summon twin/end if you had the other materials in your hand etc
Reincarnate any desired card, and if you did not like it, go to the main menu without saving your previous reincarnation