A great way to get better at a challenging task is to take advantage of tips from experts. It’s true of hitting a baseball. It’s true of playing the piano. And it’s certainly true of interviewing people for jobs.

A free way to get access to interviewing experts is to follow them on Twitter. Here are 11 interviewing experts employers should follow.

1. Gayle Laakmann McDowell

Twitter URL: https://twitter.com/gayle
Why follow: Gayle Laakmann McDowell is one of the foremost experts in technical interviewing, and regularly tweets about technical interviewing challenges, both for candidates and employers. A former Google, Apple and Microsoft developer, she is the founder and CEO of CareerCup, and is the author of “Cracking the Coding Interview,” “Cracking the PM Interview” and “Cracking the Tech Career.”

2. Lou Adler

Twitter URL: https://twitter.com/LouA
Why follow: The CEO and founder of The Adler Group— a hiring training and search firm—Lou Adler is a veteran recruiter and the author of “Hire With Your Head” and “The Essential Guide for Hiring & Getting Hired.” He tweets and writes often about interviewing.

3. Amanda Haddaway 

Twitter URL: https://twitter.com/ahaddaway
Why follow: An HR consultant and corporate trainer, Amanda Haddaway is managing director of HR Answerbox and the author of “Interviewer Success.” She tweets about a variety of HR topics, including interviewing.

4. Paul Falcone

Twitter URL: https://twitter.com/PaulFalconeHR
Why follow: Author of 10 books published by the American Management Association and SHRM, Falcone tweets about a variety of HR topics, including behavioral interviewing. One of his books is “96 Great Interview Questions to Ask Before You Hire.”

5. Ron Fry

Twitter URL: https://twitter.com/theRonFry
Why follow: Ron Fry is the author of 30 books in the areas of education and careers, and the founder and president of Career Press Inc. He regularly tweets about interviewing, mostly—but not entirely—from the candidate perspective.

6. Susan Heathfield

Twitter URL: https://twitter.com/SusanHeathfield
Why follow: Susan Heathfield is a former HR and management consultant who wrote About.com’s Human Resources site, and currently writes for TheBalance.com. She regularly writes on a variety of HR issues, including on interviewing questions.

7. Liz Ryan

Twitter URL: https://twitter.com/humanworkplace
Why follow: Liz Ryan is the founder and CEO of Human Workplace, an HR publishing, coaching and consulting firm. According to Human Workplace, Ryan is “the world’s most widely-read career and workplace authority.” Ryan tweets often about interviewing, sometimes from the employer perspective.

8. Johanna Rothman

Twitter URL: https://twitter.com/johannarothman
Why follow: A consultant, Johanna Rothman is the author of “Hiring Geeks That Fit.” She writes primarily about agile leadership and management in tech, but touches on interviewing.

9. Laurie Ruettimann

Twitter URL: https://twitter.com/lruettimann
Why follow: A writer, speaker, consultant and influencer, Laurie Ruettimann tweets often about a variety of topics, HR and otherwise. And from time to time she writes fun posts on interviewing.

10. Maren Hogan

Twitter URL: https://twitter.com/marenhogan
Why follow: Founder and CEO of Red Branch Media, Maren Hogan writes often about HR and recruiting issues, including interviewing.

11. Meghan M. Biro

Twitter URL: https://twitter.com/meghanmbiro
Why follow: Meghan M. Biro is the CEO of TalentCulture, a well-known industry influencer and a frequent writer on HR and recruiting topics, including interviewing.

For more interviewing insights and suggestions, don’t forget to follow us at @eTeki_Inc.