Decryption Challenge part 3

Here's a tougher one. Figure out what book I am
referring to using some or all of the following clues:
(tildes separate the parts of code)

Hints: many ascii de/encryption sites exist.
Double encryption anyone?


ecisionsday reaay otnotnotnay ertaincay
~~~
6d 69 74 20 70 72 65 73 73
~~~
b3h4v10r4l, c45h
~~~
MDExMDAxMTEgMDExMDExMDAgMDE
xMDEwMDEgMDExMDExMDEgMDAxMD
ExMDAgMDAxMDAwMDAgMDExMDAw
MTEgMDExMDEwMDAgMDExMDAxMD
EgMDExMTAwMTAgMDAxMDAwMDAg
MDAxMDEwMDAgMDExMDAwMDEgMD
ExMDAxMDAgMDExMDAxMDAgMDAxM
DAwMDAgMDAxMDEwMDE
~~~
%79%74%69%73%72%65%76%69%6e%
75%20%6e%6f%73%61%6d%20%65%
67%72%6f%65%67%20%74%61%20%
64%65%64%6e%75%6f%66%20%65%
6e%69%6c%70%69%63%73%69%64%
20%61
~~~
V2lsbGlhbSBILiBSZWRtb25kIHJldmlld3M=