If you can't see a card with cloud OCR, you can always go into it's details and it'll read it more clearly. It'll take some getting used to, but you'll get it. When you press A on a card and you can't go up or down at all that means it can't be summoned/set for some reason. If you can go down once that means it can be set, and if you can go down twice that means you can either put it in attack or defense if it's a monster, or play or set it if it's a magic or trap. The last down is always details. Some monsters you can go down 3 times which means they have an ability you can activate straight from your hand. Fusion monsters are easy to summon. It only lets you use polymerization if you have the monsters available, and when you use it it'll tell you the monster you're fusing for and the monsters it takes to fuse. There's a whole bunch of other stuff, but it'll take forever to write. If you have any questions that I can answer though don't hesitate to ask.
Silly Gohan, animals don't eat people. People eat animals.