I I just received my software for Photoshop and Premiere.I am going to install it on my computer but my husband also has a computer as well as my son living at home. Is it possible to install on all of them or just one?
Your Adobe software license allows you to install on two computers. This is a single user license, so the idea is really that you can install it on a desktop computer and a laptop. This single license is not to be used on both computers at the same time.
In Legalese (excerpt from the EULA, emphasis mine):
2.5 Portable or Home Computer Use. Subject to the important restrictions set forth in Section 2.6, the primary user of the Computer on which the Software is installed under Section 2.2 (“Primary User”) may install a second copy of the Software for his or her exclusive use on either a portable Computer or a Computer located at his or her home, provided that the Software on the portable or home Computer is not used at the same time as the Software on the primary Computer.