For current users of TeX , REVTeX can be obtained by contacting representatives listed in the society-specific chapters that follow this Introduction.
If you are not yet a TeX user, the other software listed above must be obtained from different sources, depending on the hardware that will be used. As noted above, the TeX User's Group has established Site Coordinators who distribute TeX for the various computers. Software obtained in this manner will be very inexpensive, but will require some computer aptitude to install. TUG can also advise on commercial sources for the software. These companies or consultants charge a fee for assisting with installation and/or providing technical assistance.