How to apply and get into Y Combinator (video) by GetAccept (W16)
What To Expect As An International Founder At Y Combinator by Sondre Rasch (Konsus (W16))
Words to Avoid in Your YC Application by Chris Morton (SlidePay (W12); (Cognito (S14))
3 Non-Obvious Tips for Your YC Application by Tad Milbourn (Payable (S14)
How to get into Y Combinator by Mattan Griffel (One Month (S13))
How to Get Into Y Combinator by Chas Ballew (Aptible (S14))
Y Combinator applicant advice by Zain Shah (Watchsend (S13))
The No BS Approach to Getting into Y Combinator by David Chen (Strikingly (W13))
Advice on YC Application by Harry Zhang (Lob (S13))
This Is Drew Houston's 2007 Y Combinator Application For A Company That's Now Worth $4 Billion, Dropbox
How to Increase Your Chances of Getting into YC by Glen Moriarty (7 Cups (S13))
How to write a winning Y Combinator application by Travis Deyle (Lollipuff (W13))
The Unofficial YC Guidebook by Jason Shen (Ridejoy (S11)

Y Combinator Alumni supporting YC startups