How to store the new stamps or used?
To keep the stamps, new or used any philatelist must have these tools:

The lens to examine closely the stamp.
Tweezers, to handle with care the stamps, without ruining the color with the fingers, which can be acidic or dirty.
The filigranoscopio, to examine the watermark of the stamp.
The ultraviolet lamp or the Wood, to see the fluorescence and phosphorescence.
The perforation gauge to measure the indentation.

In addition, to preserve the new stamps or used it is advisable to use the albums to pockets of quality.

Proper preservation of new and used stamps keep everything in a dry environment to prevent yellowing and rust and should be periodically ventilate.