So you have a string of capital letters non capital letters , numbers and god forbids some = signs ? Most likely you are looking at base64
So with one simple step you can go from this horror
to something looking more human like
http://www.asciitohex.com (yes that is my nudge of go and solve this one to see how it works)
So for the usual URL challenge this time with a level 1 XMP.
Oh and of course with a little more challenge than the example above