Here is a collection of marketing research, industry report and digital marketing guide as well as my own study notes.
Feel Downloads! Hope it helps.
E-commerce
2017-2018 跨境出口电商互联网营销白皮书 by Morketing
《2017年度中国出口跨境电商发展报告》（20180521）
BrandZ Top 50 Chinese Global Brand Builders-2019
Digital 2019-Global Digital Yearbook-en
Ecommerce Marketing in 2019 The Definitive Guide by SEJ
Mary Meeker Internet_Trends_2019
Amazon
A Complete Guide to Amazon for Vendors
Feedvisor-The State of the Amazon Marketplace 2019
Feedvisor-2019 Amazon Consumer Behavior Report
Merkle-2019 Amazon Advertising Flywheel Strategy Guide
MERKLE_Digital Marketing Report_Q1_2019
Affiliate Marketing
IAB Affiliate Marketing Handbook 2020
IAB The Big Affiliate Marketing Handbook
ADMITAD_Annual Report 2017-2018_EN_FINAL
Admitad Annual Report 2018_2019 EN
PI-affiliate-programme-buyers-guide
STM forum What is Working in 2019
STM forum What’s-working-in-2018-final
APP
The AppsFlyer Performance Index 2018
SEO
Moz-The-Beginners-Guide-To-SEO
47 Experts on the 2019 SEO Trends That Really Matter
Pepperjam SEO 101 for Publishers 2018.2.21
Backlinko_Skyscraper Technique Checklist
Social
Pinterest Seasonal Insights-2019
The 2019 Ultimate Guide to Facebook Engagement by BuzzSumo
Ad Tech
IAB_Programmatic-In-Housing-Whitepaper
IAB-Native-Advertising-Playbook
Marketing Technology Landscape | Martech 5000
Bob’s Work
Affiliate Marketing Guide by Bob