There are 4 royal stars (watchers of the directions)
Aldebaran - current location 10 GEM
Regulus (heart of a Lion) - 0 VIR
Antares (heart of a Scorpio) - 10 SAG
Fomalhaut - 4 PIS
and the most notorious star Caput Algol - 27 TAU
To these you may allow 2-3 degrees orb of influence in horary.
Other notable stars (with current longitude according to my software):
Scheat - 0 ARI
Alcyone - 0 GEM
Rigel -17 GEM
Bellatrix - 21 GEM
Polaris and Betelguese - 29 GEM
Sirius - 14 CAN
Castor - 21 CAN
Pollux - 24 CAN
Proycon - 26 CAN
Alphard and Adhafera - 28 LEO
Zosma - 12 VIR
Denebola - 22 VIR
Vindemiatrix - 10 LIB
Spica - 24 LIB
Arcturus - 25 LIB
Acrux - 10 SCO
Zuben Elgenubi (Southern Scale) - 15 SCO
Zuben Eschemali (Northern Scale) - 20 SCO
Unukalhai (Serpentis) - 22 SCO
Vega - 16 CAP
Markab - 24 PIS
I'm sure I forgot to mention some important star in this list
. Most astro softwares can display conjunctions with the stars.
Very good list with short descriptions, only positions of the stars are out of date:
http://www.librarising.com/astrology/fwa/stars.html