I made this packing list years ago when I hiked the Salkantay Trek. A friend was going shortly after me and had no gear, so this is what I told her to buy
Sections
4
Packs
Boots
General Gear
Clothing
Packs
A good daypack is essential! I've had this one for around 8 years and it is still going strong.
Osprey Tempest 20 Women's Hiking Backpack
I challenge you to find a better water bladder. I have tried MANY, but now I am a dedicated Osprey fan.
Osprey Hyrdaulics Backpack Water Reservoir
Boots
These Salomons are what I currently wear. I have weak ankles, so they provide the heavy-duty support I need. I love them. The only downside is that they are a little warmer than some other boots I've tried.