I'd recommend the following for starters: Horizon in the Middle of Nowhere, Kyoukai no Kanata, After that you'll want to move to something more complex, like: A Certain Magical Index, A Certain Scientific Railgun, If you want to numb the mind to slice of life comedy: Acchi Kocchi, Is the Order a Rabbit? Korewa Zombie Desuka? Some long running series for marathon: Soul Eater, Fairy Tail,