The following articles contain useful and interesting information on individual variable stars. Many of the most popular stars in the AAVSO observing program are featured. From December 1998 until December 2002, the collection of articles comprised the "Variable Star of the Month" series. Since that time, they have all been published as part of the "Variable Star of the Season" (VSOTS) collection.
| Cepheids | G Cas | Nova-like | Recurrent Novae | S Dor | T Tauri | Misc. |
| Delta Sct | Galactic Nuclei | Novae | RR Lyr | Semi-regular | U Gem | UV Cet |
| Eclipsing Binaries | Mira | R CrB | RV Tauri | Supernovae | Z And |
| PULSATORS | |||
| Beta Cephei Stars | |||
| Beta Cephei Stars and Their Relatives: Winter 2005 |  |
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| Cepheids | |||
| RS Pup: January 2011 |  |
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| TU Cas: Fall 2005 | |||
| W Virginis: Spring 2003 | |||
| X Cygni: September 2002 | |||
| Zeta Geminorum: March 2002 | |||
| Delta Cephei: September 2000 | |||
| Delta Scuti Variables | |||
| Delta Scuti and the Delta Scuti Variables: Summer 2004 |  |
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| Mira Stars | |||
| RU Vir: April 2007 |  |
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| Khi Cygni: September 2014 | |||
| Mira Variables with Period Changes: April 2011 | |||
| Mira Revisited: Winter 2006 | |||
| R Hydrae: May 2002 | |||
| R Cygni: November 2001 | |||
| R Leonis: April 2001 | |||
| Mira: December 1998 | |||
| RR Lyrae | |||
| RR Lyrae: Fall 2010 |  |
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| AH Leo: Spring 2006 | |||
| XZ Cygni: August 2002 | |||
| RV Tauri types | |||
| RV Tauri: January 2009 |  |
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| U Monocerotis: Winter 2003 | |||
| R Scuti: July 2000 | |||
| Semi-regular | |||
| Antares: Summer 2014 |  |
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| W Hya: April 2008 | |||
| V725 Sgr: Autumn 2006 | |||
| Mu Cephei: October 2002 | |||
| EU Delphini and the Small-Amplitude Pulsating Red Giants: July 2001 | |||
| Betelgeuse: December 2000 | |||
| Z Ursae Majoris: March 2000 | |||
| CATACLYSMIC VARIABLES | |||
| Novae | |||
| Novae: February 2012 |  |
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| GK Persei: November 2000 | |||
| Nova-like | |||
| UX Ursae Majoris: Spring 2004 |  |
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| Recurrent Novae | |||
| U Scorpii: July 2009 |  |
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| T Pyxidis: April 2002 | |||
| RS Ophiuchi: May 2000 | |||
| Supernovae | |||
| Supernova 1987A: March 2001 |  |
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| U Gem and subtypes | |||
| EX Hydrae: April 2009 |  |
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| RX Andromedae: October 2007 | |||
| VW Hydri: November 2002 | |||
| IP Pegasi: December 2001 | |||
| WZ Sagittae: September 2001 | |||
| AM Herculis: June 2001 | |||
| SS Cygni: June 2000 |  |
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| SU Ursae Majoris: February 2000 | |||
| Z Camelopardalis: April 1999 | |||
| U Geminorum: February 1999 | |||
| Z And (Symbiotics) | |||
| R Aquarii: Summer 2003 |  |
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| CI Cygni: July 2002 | |||
| Z Andromedae: October 2000 | |||
| CH Cygni: August 2000 | |||
| ERUPTIVE VARIABLES | |||
| G Cas | |||
| Gamma Cassiopeiae: October 2001 |  |
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| Delta Scorpii: July 2011 (ES) | |||
| R CrB | |||
| RY Sagittarii: August 2001 |  |
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| R Coronae Borealis: January 2000 | |||
| S Doradus | |||
| P Cygni: September 2009 |  |
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Eta Carinae: April 2000 |
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V1478 Cygni (MWC 349): July 2007 |
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| T Tauri and related stars | |||
| RR Tauri: December 2006 |  |
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| BM Ori, the Trapezium, and YSOs: April 2012 | |||
| FU Ori: February 2002 | |||
| T Tauri: February 2001 | |||
| UV Ceti Variables/Flare Stars | |||
| UV Cet: Fall 2003 |  |
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| OTHER TYPES | |||
| Eclipsing Binaries | |||
| W Ursae Majoris: January 2010 |  |
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| Epsilon Aurigae: January 2008 | |||
| β Lyrae: Summer 2005 | |||
| Algol: January 1999 | |||
| Active Galactic Nuclei | |||
| The Quasar 3C 273: Spring 2005 |  |
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| Markarian 421: Winter 2004 | |||
| BL Lacertae: January 2001 | |||
| Miscellaneous | |||
| FG Sagittae: June 2008 |  |
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| FG Sagittae: November 1998 | |||
| V4641 Sgr: June 2006 | |||
| Transiting Exoplanets HD 209458 and TrES-1: September 2004 | |||
| TT Arietis: January 2002 | |||
| V4334 Sgr (Sakurai's Object): June 2002 | |||
| V838 Mon: December 2002 |  |
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| VY Canis Majoris: March 1999 | |||