I'm New To Ancients => What's The Best Reference Catalogue?

I'm new to Ancients => what's the best reference catalogue?

CONTEXT:
Man, I never seem to learn! => once again, I've impulse-bought a bunch of coins ... this time I've stepped into your world (Ancients) ... now I'd like to find a reference catalogue and try to learn a bit more about these coins that I've already purchased (yes, I realize it is putting the cart before the horse) ... oh well, it's apparently how I roll!

For the record, I purchased the following 4 coins:

COIN #1:
Valentinian I, AE 19 mm
Minted AD 367--375
Obverse: D N VALENTINIANVS P F AVG, diademed, draped and cuirassed bust right
Reverse: GLORIA ROMANORVM, emperor walking right, head left, dragging captive and holding labarum, TES B in exergue
Weight: 2.7 g
Diameter: 19 mm
Reference: RIC IX Thessalonica 16a




COIN #2:
Ancient Roman Coinage of DIOCLETIAN
284-305 A.D.
Antoninianus, 22mm 3.81 g.
Rome Mint. Struck ca. 290 AD.
Obverse: IMP DIOCLE TIANVS AVG, radiate and cuirassed bust right.
Reverse: IOVI FV LGERATORI, Jupiter standing facing, head right, preparing to hurl thunderbolt; at feet to left, eagle standing left, head right; XXI �" in exergue. Ref. RIC V 168 var. (unlisted officina and with eagle). near XF, flan crack.



COIN #3:
ROMAN REPUBLIC ANCIENT COINAGE
C Servilius Vatia
127 BC. Rome Mint
AR (Silver) Denarius. 3.85g. 19mm.
Obverse: Winged, helmeted head of Roma right, lituus behind, ROMA below, * under chin.
Reverse: C•SERVEIL below two horseman galloping left, one looking back weilding a sword & being speared by the other who holds a round shield inscribed with an M.
Ref. Servilia 6: Cr264/1, Syd 483. VF



COIN #4:
ROMAN REPUBLIC ANCIENT COINAGE
C. Licinius Lf Macer
Struck 83 BC. Rome Mint
AR (Silver) Denarius. 3.39g. 20mm.
Obverse: Diademed bust of Vejovis left, seen from behind, hurling thunderbolt.
Reverse: Minerva in quadriga (four-horse chariot) right with javelin & shield; C LICINIVS L F MACER in two lines in ex.
Nice VF.
Ref. Licinia 16; Cr354/1; Syd 732.



... so, I'd love to learn more about these four coins that I've already purchased, plus discover additional Ancient coins that I could add to my brand new passion ...

QUESTION:
=> Is there "one" wonderful reference catalogue the folks that collect Ancient-coins swear by?! (in other words, is there a " Red Book" or "Charlton Catalogue" for Ancients?)

thanks
Steve