Twitter is a great place to go if you’re looking for marketing advice. It’s full of influential people sharing great (and sometimes, not so great) advice, tips, and trends, making it the go-to resource for marketers looking to up their game. The challenge is finding the right influencers sharing the best advice, based on their own experience and expertise.

In honor of International Women’s Day on March 8th, we’ve put together a list of the top 10 most influential women in marketing on Twitter. These women are known for their insightful tweets and admirable experience in the world of marketing, and they’ll help you become a marketing pro.

Ann Handley

As the head of content at MarketingProfs, Ann Handley is a powerhouse in the world of content marketing. Having written the WSJ bestseller Everybody Writes: Your Go-To Guide to Creating Ridiculously Good Content, as well as co-authoring Content Rules: How to Create Killer Blogs, Ann is spearheading the movement for better content. She also frequently writes for Entrepreneur, Huffington Post, and Mashable on digital marketing for business.

Follow @MarketingProfs

Claire Diaz-Ortiz

Claire Diaz-Ortiz is a speaker, technology innovator, and author. As one of the earliest Twitter employees, Claire has been cited as ‘The Woman Who Got the Pope on Twitter’, as well as one of the ten most generous people in social media. She’s the founder of Hope Runs, a nonprofit organization in Kenya for AIDS orphanages, and is author of the book Twitter for Good: Change the World One Tweet at at Time. She’s appeared on CNN, the BBC, and in Time, and has spoken at events including TEDx and South by Southwest.

Follow @Claire

Kim Garst

Kim Garst is a Forbes Top Ten Social Media Power Influencer, co-founder of Boom! Social, and best-selling author of The Quick and Easy Guide to Branding your Business and Creating Massive Sales with Pinterest. She’s one of the most retweeted people in digital marketing, having advised companies such as Microsoft, IBM, and Mastercard in social and digital marketing.

Follow @kimgarst

Lilach Bullock

Lilach Bullock is another Forbes Power Influencer, appearing on its Top 20 Women Social Media Influencers list. She was also crowned “Social Media Influencer of Europe” by Oracle.  She started her career in social media with her company Ask Lilach and has gone on to found two other companies based on social media and digital marketing. She’s currently advising small businesses, entrepreneurs, and charities on digital strategy.

Follow @lilachbullock

Mari Smith

Mari Smith is a social media strategist particularly influential in Facebook marketing and has been dubbed the “Queen of Facebook”. Co-author of Facebook Marketing: An Hour a Day and author of The New Relationship Marketing, Mari is a top influencer and speaker who regularly appears in The New York Times, The Wall Street Journal, and Forbes as a marketing expert. She also appears on Forbes’ list of Top Ten Social Media Power Influencers.

Follow @MariSmith

Tina Wells

As the CEO and founder of Buzz Marketing Group, Tina Wells is a marketing leader specialized in connecting influencers with consumer brands. With a focus on youth marketing, she’s written the book Chasing Youth Culture and Getting It Right, as well as sitting on the board of NPH USA, an organization helping raise orphaned children in Latin America and the Caribbean. She also serves on the United Nations Foundation’s Global Entrepreneurs Council and the Young Entrepreneur council.

Follow @tinacwells

Amy Porterfield

Amy Porterfield is a social media strategist and co-author of Facebook Marketing All-in-One for Dummies. Amy works with entrepreneurs and small businesses to strategize social media, and she’s been featured in Forbes, Social Media Examiner, and The Huffington Post.  She’s currently the host of the Online Marketing Made Easy Podcast, which helps small businesses get the most out of their online marketing efforts.

Follow @AmyPorterfield

Aleyda Solis

As an SEO expert, Aleyda Solis is a powerhouse in the online world of SEO. She blogs regularly for Search Engine Land and Moz, and has published a book in Spanish, “SEO: Las Claves Esenciales.” Through her company Orainti, she’s done marketing and SEO consulting for companies including Under Armour and Zillow.

Follow @aleyda

Peg Fitzpatrick

Peg Fitzpatrick is a social media strategist, trainer, and speaker. She’s currently the director of content marketing and social media for Tailwind, a platform for managing and measuring Instagram. She co-authored her book, The Art of Social Media, with Guy Kawasaki in 2014.

Follow @PegFitzpatrick

Rebekah Radice

Rebekah Radice is a social media speaker and award winning content marketer. She frequently appears in popular online publications including HubSpot, Social Media Examiner, and Social Media Today, giving advice about social strategy. As well as being the author of How to Use Social Media to Virtually Crush the Competition, she’s also the CMO of PostPlanner, a social media marketing software for companies to get more reach and engagement on social.

Follow @RebekahRadice

If you’re inspired by these influential women in marketing and want to up your marketing game, start with a social media marketing solution to manage your own social media presence. From there, check out a marketing automation solution to help you make the most of your marketing campaigns.

And don’t forget to follow GetApp’s own crew of female writers, @GetApp_Suzie, @GetApp_Rhian, @karenmccandless and @LaurenMaffeo for all the latest insights and trends into business software.

This article was originally published on September 12, 2014.