What are basic openings I need for black? I'm an amateur player and want to learn a couple openings for black. I want to have a response for d4 and e4. I want one for each and hopefully one that is relatively straight forward (unlike Indian defense as I understand). It would be great if they were slightly obscure and therefore unknown to my opponents. 
As white I'm basically going to try and play Scotch opening (and maybe later some other e4 openings) every time.
Since you want obscure openings, I would advise the Dutch defense against 1.d4 and the French defense for 1.e4. The Dutch is played less than Indians, queen pawn, Nimzo, Gruenfield, Slav..., thus your opponents won't know anything about it but you will. The Leningrad Dutch and Stonewall defense are played time to time. Nakamura has played the Leningrad Dutch numerous times, Magnus, Levon, Anand, etc have used the Dutch from time to time. I recommend the French because I think it is much easier to learn than 1.e5, which falls to a lot of traps and 1.c5, which is of course not obscure and has a lot of theory. Unfortunately, people can go into a very drawish line in the exchange French. You might want to consider Owen's defense 1... b6.