I need to see loads of examples before I can get something. So here's loads of necks doing the weird necky things that necks do.
To get what's going on with the tangle of muscles and tendons catch necks in action. Watch people in cafes. Pause TV. (Buffy the Vampire Slayer has particularly good lighting for drawing.) Then check out how cartoonists simplify the confusion. Maybe even check out some anatomy to see what's going on beneath the skin. Each gives you a different piece of the puzzle.
Organized by where the head is relative to the shoulders, then by where the camera is. So each group should have the same muscles and tendons bulging out. (If you post drawings from any stock here, do check the stock artist's rules.) NOTE: Images marked with ⬅ are NOT stock. Use them for practice, but don't post. (There's only one image marked since there's so much great stock.)
If you stumble across good neck stock, especially with good shadows, I'd love it if you'd post a link in the comments. 
(Other parts of the body will get the same treatment at some point.)
HEAD TURNED 1/4
ANGLED FRONT VIEW
FEMALE RIGHT
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FEMALE LEFT
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MALE RIGHT
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MALE LEFT
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OLDER RIGHT
:thumb252585070:OLDER LEFT
FULL FRONT VIEW
FEMALE RIGHT
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FEMALE LEFT
MALE RIGHT
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MALE LEFT
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OLDER RIGHT
OLDER LEFT
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SIDE VIEW
FEMALE RIGHT
FEMALE LEFT
MALE RIGHT
MALE LEFT
FULL BACK VIEW
FEMALE LEFT
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HEAD TURNED 1/4, CHIN up
ANGLED FRONT VIEW
FEMALE RIGHT
FEMALE LEFT
:thumb287447847: MALE RIGHT
MALE LEFT
:thumb75125048: FULL FRONT VIEW
FEMALE RIGHT
:thumb133255489: :thumb137266041:
:thumb202039848: FEMALE LEFT
MALE RIGHT
:thumb168566821:MALE LEFT
HEAD TURNED 1/4, HEAD TILTED side
ANGLED FRONT VIEW
FEMALE RIGHT
FEMALE LEFT
MALE RIGHT
MALE LEFT
:thumb177788367:HEAD TURNED 1/4, CHIN down
FULL BACK
MALE
HEAD FORWARD
ANGLED FRONT VIEW
FEMALE RIGHT
:thumb152745665: FEMALE LEFT
MALE RIGHT
MALE LEFT
MUSCULOSKELETAL
OLDER RIGHT
OLDER LEFT
FULL FRONT VIEW
FEMALE
MALE
OLDER
:thumb264067481:
SIDE
FEMALE RIGHT
FEMALE LEFT
MALE RIGHT
MALE LEFT
OLDER RIGHT
MUSCULOSKELETAL
HEAD FORWARD, CHIN up
ANGLED FRONT VIEW
FEMALE RIGHT
FEMALE LEFT
:thumb129156565:
MALE RIGHT
Hair Flip 2 by LinzStock Skyward by LinzStock Wolfboy 4 by DaeStock Londinium Angelis 20 by Random-Acts-Stock Wolfboy 7 by DaeStock MALE LEFT
augq2 by ohnostock Jump 22 by DaeStock Taylor in Shadow 04 by LinzStock Grunge Angel stock 53 by Random-Acts-Stock A5107S by arachnid5 stock 49 by Veyga Tarzan Taylor 11 by LinzStock Taylor in Shadow 04 by LinzStock fit Jason Aaron Baca 01 by jasonaaronbaca Male Stock 213 by BirdsistersStock
FULL FRONT VIEW
FEMALE
Neck by freakyada Neck Stock 4 by Stockz4U Neck Stock 6 by Stockz4U Hair Swing Up Stock by kuskostock 55 by mystical-desires :thumb180484608: Mummy Dance IV by lindowyn-stock Catching the Light by CathleenTarawhiti :thumb207032851: :thumb306628094: neck by OhBOBlyone-Stock
MALE
Flying for ErinM31 by DaeStock Stock 038 - Fabrice 2 by senzostock Icarus stock 5 by Random-Acts-Stock Male IV by PhoenixFireStock Train Carriage Stock 3 by Storms-Stock Unai suicide 1 by ladysivali-stock Me-Myself-And-I 44 by wookiestock Me-Myself-And-I 4 by wookiestock Agony2 for ivy-ashe by DaeStock Wolfboy 2 by DaeStock Scream by DaeStock Dark Stock247 by Darknight-Stock Unai suicide 1 by ladysivali-stock Ascend 01 by LinzStock Daven 06 by LinzStock Dark Stock303 by Darknight-Stock Greek Warrior 2 by WhiteWing-Stock-EtAl basics - dbz - 1 by Ahrum-Stock Jump 19 by DaeStock
OLDER
SIDE
FEMALE RIGHT
FEMALE LEFT
Illientesse stock 8 by charligal-stock Into the Sky by AdorkaStock Love For Chairs Stock 7 by kuskostock swan-2 by xstockx
MALE RIGHT
paint4 by ohnostock Bloo III - Heavens by BlooDoveStock 13 by Jay-Afridi Dark Stock182 by Darknight-Stock Dark Stock222 by Darknight-Stock Dark Stock223 by Darknight-Stock Broken 7 by DaeStock shore4 by ohnostock Face Neck and Nugget 23 by Ahrum-Stock
MALE LEFT
Taming the Wild 17 by Ahrum-Stock Dark Stock221 by Darknight-Stock Face Neck and Nugget 15 by Ahrum-Stock Dark Stock231 by Darknight-Stock
HEAD FORWARD, CHIN down
ANGLED FRONT VIEW
FEMALE RIGHT
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FEMALE LEFT
MALE RIGHT
requestq1 by ohnostock augq3 by ohnostock holdcat4 by ohnostock fitness 012 by rera-stock Stock_M XII by OlmoStock Dark Stock230 by Darknight-Stock
MALE LEFT
SIDE
FEMALE RIGHT
FEMALE LEFT
MALE RIGHT
ANGLED BACK
MALE LEFT
FULL BACK
MALE
HEAD FORWARD, HEAD TILTED side
ANGLED FRONT VIEW
FEMALE LEFT
MALE RIGHT
FULL FRONT VIEW
FEMALE RIGHT
FEMALE LEFT
Evil queen 3 by CathleenTarawhiti Felicity by CathleenTarawhiti Just Luna by CathleenTarawhiti :thumb133480489:
MALE RIGHT
MALE LEFT
HEAD TO SHOULDER, toward viewer
ANGLED FRONT VIEW
FEMALE RIGHT
Mermaid and other poses 4 by CathleenTarawhiti :thumb304100369: Femme Fatale by AdorkaStock :thumb189183460: Olga 62 by Random-Acts-Stock :thumb135877178: :thumb196401135: :thumb142271580: :thumb318218896:
FEMALE LEFT
:thumb316230830: :thumb90743938: :thumb53375343: :thumb53378949: :thumb290259998: :thumb30716076: :thumb30715861: :thumb188556982: :thumb298721270: :thumb143867667: :thumb183697648:
MALE RIGHT
:thumb88002207:
MALE LEFT
:thumb264126438: :thumb203632846: :thumb304640435: :thumb70322479:
FULL FRONT VIEW
FEMALE RIGHT
:thumb318220766: :thumb263407970: :thumb110235896: :thumb58448175: :thumb265852353: :thumb168570203: :thumb298721570: :thumb164037003: :thumb258031043: :thumb146164381: :thumb60817592: :thumb4774234: :thumb191954996: :thumb55125082:
FEMALE LEFT
:thumb313532583: :thumb144451719: :thumb32280620: :thumb155786963: :thumb53460105: :thumb50702163: :thumb273263946: :thumb194619953: :thumb214035895: :thumb93109887: :thumb54694455: :thumb301387021: :thumb184972412: :thumb314041713: :thumb164037550: :thumb127208827:
MALE RIGHT
:thumb127356169: :thumb127361115: :thumb304640531: :thumb47284426: :thumb47619858: :thumb29958097: :thumb127356484: :thumb200117000: :thumb42710554: :thumb29186118: :thumb207188370: :thumb206791749: :thumb310038800: :thumb9802880:
MALE LEFT
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SIDE
FEMALE RIGHT
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FEMALE LEFT
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MALE RIGHT
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MALE LEFT
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ANGLED BACK VIEW
FEMALE RIGHT
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FEMALE LEFT
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MALE RIGHT
:thumb317925561: :thumb179912723: :thumb263235482: :thumb191427672:
MALE LEFT
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FULL BACK VIEW
FEMALE RIGHT
:thumb245414982:
MALE RIGHT
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MALE LEFT
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HEAD TO SHOULDER, CHIN up
FULL FRONT VIEW
FEMALE RIGHT
:thumb137266041: :thumb49505214: :thumb46908175:
FEMALE LEFT
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HEAD TO SHOULDER, CHIN down
FULL FRONT VIEW
FEMALE RIGHT
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FEMALE LEFT
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MALE RIGHT
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MALE LEFT
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HEAD TO SHOULDER, away from viewer
ANGLED FRONT VIEW
FEMALE RIGHT
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FEMALE LEFT
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MALE RIGHT
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MALE LEFT
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SIDE
FEMALE LEFT
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MALE RIGHT
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Multiple views
THE EXPRESSIONS REFERENCE PROJECT where there are loads like this, many including necks in action.
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MALE
:thumb46423195: Stock pack 1: Pack 1
:thumb46423260: Stock pack 2: Pack 2
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FEMALE
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Sketches
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Tutorials
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:thumb83130482: Quick and simple
Also
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