1. Every morning, when the the sun hits my bedroom window (which has the blinds closed), the window makes this....well, it sounds like maybe the pane and/or the glass is "settling," I guess similar to a floor settling. I've likened the sounds it makes to that of when you crack your knuckles, or pop the tendons in your knee.

This is no good, when I'm trying to sleep in, so I was wondering if there was some kind of easy remedy to this.

2. I can't fault someone for walking, but when the person who lives above me walks around, the ceiling "creaks" (again as if the floorboards (ceiling boards?) are settling). From what I've been told by the office, she is petite, so it's not like she's stomping around.

Normally, it's not really bad, but it has started to wear on me a little

Is there anything I can do to...I don't know soundproof or fix the ceiling, or something else?

Even if the upstairs person adds areas rugs to her floors, it won't help the creaking very much. I know, I was that upstairs person in my last apartment. It took me months to convince a new landlord that I wasn't stomping around in army boots all the time; I was walking around barefoot and had covered 80% of the floor in area rugs. But the floors in that 180 year old building creaked. I was sorry to bother the downstairs neighbors, but some of the floorboards creaked when my cats walked on them. The landlord looked into fixing the problem but decided that it wasn't worth the money.