I've found that everytime I need to start a design project, it helps to have a list of fonts in front of me so I don't have to try various ones (very time-consuming!). I made a list of the fonts on my desktop and what they look like. I'm posting this online in the hopes of helping others. I'm also including my favorite links. -Holly (@wavianarts)
font-list.pdfAbadi MT Condensed Light
Albertus Extra Bold
Albertus Medium
Antique Olive
Arial
Arial Black
Arial MT
Arial Narrow
Bazooka
Book Antiqua
Bookman Old Style
Boulder
Calisto MT
Calligrapher
Century Gothic
Century Schoolbook
Cezanne
CG Omega
CG Times
Charlesworth
Chaucer
Clarendon Condensed
Comic Sans MS
Copperplate Gothic Bold
Copperplate Gothic Light
Cornerstone
Coronet
Courier
Courier New
Cuckoo
Dauphin
Denmark
Fransiscan
Garamond
Geneva
Haettenschweiler
Heather
Helvetica
Herald
Impact
Jester
Letter Gothic
Lithograph
Lithograph Light
Long Island
Lucida Console
Lucida Handwriting
Lucida Sans
Lucida Sans Unicode
Marigold
Market
Matisse ITC
MS LineDraw
News GothicMT
OCR A Extended
Old Century
Pegasus
Pickwick
Poster
Pythagoras
Sceptre
Sherwood
Signboard
Socket
Steamer
Storybook
Subway
Tahoma
Technical
Teletype
Tempus Sans ITC
Times
Times New Roman
Times New Roman PS
Trebuchet MS
Tristan
Tubular
Unicorn
Univers
Univers Condensed
Vagabond
Verdana
Westminster
Allegro
Amazone BT
AmerType Md BT
Arrus BT
Aurora Cn BT
AvantGarde Bk BT
AvantGarde Md BT
BankGothic Md BT
Benguiat Bk BT
BernhardFashion BT
BernhardMod BT
BinnerD
Bremen Bd BT
CaslonOpnface BT
Charter Bd BT
Charter BT
ChelthmITC Bk BT
CloisterBlack BT
CopperplGoth Bd BT
English 111 Vivace BT
EngraversGothic BT
Exotc350 Bd BT
Freefrm721 Blk BT
FrnkGothITC Bk BT
Futura Bk BT
Futura Lt BT
Futura Md BT
Futura ZBlk BT
FuturaBlack BT
Galliard BT
Geometr231 BT
Geometr231 Hv BT
Geometr231 Lt BT
GeoSlab 703 Lt BT
GeoSlab 703 XBd BT
GoudyHandtooled BT
GoudyOLSt BT
Humanst521 BT
Humanst 521 Cn BT
Humanst521 Lt BT
Incised901 Bd BT
Incised901 BT
Incised901 Lt BT
Informal011 BT
Kabel Bk BT
Kabel Ult BT
Kaufmann Bd BT
Kaufmann BT
Korinna BT
Lydian BT
Monotype Corsiva
NewsGoth BT
Onyx BT
OzHandicraft BT
PosterBodoni BT
PTBarnum BT
Ribbon131 Bd BT
Serifa BT
Serifa Th BT
ShelleyVolante BT
Souvenir Lt BT
Staccato222 BT
Swis721 BlkEx BT
Swiss911 XCm BT
TypoUpright BT
ZapfEllipt BT
ZapfHumnst BT
ZapfHumnst Dm BT
Zurich BlkEx BT
Zurich Ex BT
What the font? I love this site. If you can't figure out what a font is, upload a screenshot and it will walk you through a process of figuring it out. AND most importantly, it actually works.
Google fonts are free! All Google fonts are open source and thus there is no cost. (See their FAQ for more info: https://fonts.google.com/faq#general )