Pro Test

We’ve compiled the ultimate list of free and useful digital marketing resources that will remain relevant for years to come.

The content is grouped into categories including SEO, Conversion Rate Optimization, Social Media, Web Analytics, Growth Hacking and more. Enjoy and put it to good use!

Conversion Rate Optimization:

12 A/B Split Testing Mistakes I See Businesses Make All The Time

by Peep Laja, Founder of Markitekt

Conversion Rate Optimization (CRO) Techniques: The Complete List

by Brian Dean, Founder of Backlinkinfo

How to Increase Conversions Using Color Psychology

by Talia Wolf, Founder and CEO of Conversioner

The Most Entertaining Guide to Landing Page Optimization You’ll Ever Read

by Oli Gardner, Co-founder of Unbounce

Everything You Know About Conversion Rate Optimization Is Wrong

by Larry Kim, CEO of MobileMonkey, Founder of Wordstream.

5 Reasons to Get Obsessed with Conversion Rate Optimization

by Conversion Rate Experts

A/B Testing: a Comprehensive Guide to Getting Started

by Luke of Gainbits


Search Engine Optimization:

When Optimizing For SEO And The Semantic Web, Don’t Forget Your Audience

by Bill Slawsky, President and Founder of SEO by the Sea

Link Building Case Study: How I Increased My Search Traffic by 110% in 14 Days

by Brian Dean, Founder of Backlinkinfo

How Google Knows Good Content From Bad Content

by Rank Ranger

The Essential Guide to Creating an SEO-Friendly Customer Journey

by Neil Patel

How To Write Meta Descriptions for Maximum Clicks

by Arienne Holland, Director of Marketing and Customer Experience at Raven

(Provided): 10 Ways to Prove SEO Value in Google Analytics

by Jeff Saur, Founder of Jeffalytics

You Can’t Reverse Engineer The Google Algorithm

by Ryan Jones, Manager Search Strategy & Analytics at SapienNitro

How Ditching Traditional Link Building Got Us More Traffic

Gael Breton SEO and marketing geek at Higherclick

Content Marketing:

The Greatest Misconception in Content Marketing

by Rand Fishkin, Wizard of Moz

The Ideal Length of Everything Online, Backed by Research

by Kevan Lee, Content Crafter at Buffernet

We Analyzed Nearly 1 Million Headlines. Here’s What We Learned

by Garrett Moon, Founder of Coschedule

The Ultimate Copy Checklist: 51 Questions to Optimize Every Element of Your Online Copy

by Aaron Orendorff of iconicontent

6 Steps for Writing Simple Copy That Sells

by Aaron Orendorff of iconicontent

100 Lessons Learned from 10 Years of Blogging

by Neil Patel

How to Know What Content Drives Traffic

by Skip Besthoff, CEO of InboundWriter

How to Do a Content Audit: The Ultimate Checklist

by Ashley Ward


An Epic List of 100 Growth Hacks for Startups

by Justin McGill, Founder of Workado

22 Ways to Reduce Churn with Growth Hacking

by Lincoln Murphy of SixteenVentures

Avoiding The Wheel Of Meaningless Growth

by Brian Balfour, VP Growth at Hubspot

Editorial Planning and Distribution

by Iris Shoor of Startup Moon

Scraping Online Communities for your Outreach Campaigns

by Matthew Barby

Is Amazon Unstoppable?

by By Charles Duhigg of The New Yorker

The 5 Phases of Growth Hacking

Ryan Holiday, media columnist


Paid Media:

Brands vs Ads

by SEO Book

The Top 10 Best PPC Hacks … Ever!

by Larry Kim, CEO of MobileMonkey, Founder of Wordstream

50 Strategies To Increase Click Through Rate Via PPC Advertising

by Justin Croxton, CEO of Que Commerce

Why Keyword Themes +Modified Broad Match = Winning PPC Strategy

by Georgene Nunn

The new dot com bubble is here: it’s called online advertising

by Jesse Frederik and Maurits Martijn of The Correspondent

Here’s How Every PPC Marketer Should Deal with Abandoning Visitors

by Angus Lynch, Director of Marketing at Rooster

Web Analytics:

Google Analytics Visitor Segmentation: Users, Sequences, Cohorts!

by Avinash Kaushik

Telling Stories with Data – Six Step Framework

by Daniel Waisberg, Analytics Advocate at Google

7+ Under-Utilized Google Analytics Reports for Conversion Insights

by Peep Laja, Founder of Markitekt

Four Things I Wish Analytics Tools Did

by Des Trainor, Co-founder of Intercom

Tell a Meaningful Story With Data

by Daniel Waisberg, Analytics Advocate at Google

Top 24 Google Analytics Tips, Hacks & Automations

by Andrew Garberson of LunaMetrics

16 Secret Google Analytics Advanced Segments Worth Their Weight in Gold

by Josh Braaten, Associate Director of Inbound Marketing at Rasmussen College

Email Marketing:

The Email Templates That Got 50% Of Our Users To Answer

by Iris Shoor of Startup Moon

20 Effective Email List Growth Tactics for E-Commerce

by Stuart McKeown, Co-founder at Gleam

How to Gather 100,000 Emails in One Week

by Timothy Ferriss of FourHourWorkWeek

152 Killer Keywords for Email Subject Lines (and 137 Crappy Ones)

by Parry Malm, President of Howling Mad

It’s Not Okay to Make These Email Marketing Mistakes

by Carly Stec, Content Marketing Manager at Impact

11 Reasons to Test Every Email Before You Send

by Lauren Smith, Content Marketing Manager at Litmus

User Experience:

Testing The Hamburger Icon for More Revenue

by Peep Laja, Founder of Markitekt

Don’t Make Me Search

by Christopher Buttler, COO of Newfangled

7 things I Wish Every Search Box Did

by Nicolas Dessaigne, Cofounder and CEO of Algolia

How Behavioral Design Creates the Best User Experiences

by Chris Goward, Founder and CEO of WiderFunnel

Simple is Marketable

by Andrew Chen

Essential Guide To Creating A Stunning Reading Experience

by Dustin W. Stout, CMO at Weal Media

Placeholders in Form Fields Are Harmful

by Katie Sherwin, User Experience Specialist at Nielsen Norman Group

Our Content Feed is Broken

by Tyrale Bloomfield, UX evangelist & Creative consultant

Customer Loyalty:

The Art of Customer Loyalty

by Gregory Ciotti, Growth at HelpScout

To Keep Your Customers, Keep It Simple

by Patrick Spenner and Karen Freeman

10 Trending Changes In Customers and Customer Service Expectations

by Micah Solomon, customer experience consultant and Forbes contributor

Your Customers are Already Omni-channel. Are You?

by Waynette Tubbs, content marketer

The Ultimate Guide To Customer Loyalty

by Anand Srinivasan, internet marketing consultant

7 Steps to Customer Loyalty in eCommerce

by Kerry Butters, content writer at markITwrite

Social Media Marketing:

We Analyzed the 3,000 Most Successful LinkedIn Publishing Posts

by Paul Shapiro of SearchWilderness

How to Build an Audience-Aligned Social Marketing Strategy

by Lucy Hitz of Simply Measured

Checklist: 19 Custom Ad Report Tasks for Advanced Facebook Advertisers

by Jon Loomer

The 5 Key Ingredients of a Perfect Facebook Post

by Dara Fontein

How to Create a Social Media Marketing Plan From Scratch

by Kevan Lee, Content Crafter at Buffernet

Your Guide To All Things Hashtag Analytics & Optimization

by Dan Cristo, Director of SEO Innvoation at Catalyst Online

What I learned spending $2 Million on Facebook Ads

by Noah Kagan of OkDork

The Best (And Worst) Times To Post On Social Media

by Rachel Gillett of FastCompany