How do I learn the best SEO techniques in 2019?

Here are some of the best practices & Useful links for SEO in 2018/2019

1. Content: Content has always been an important ranking signal for a long time, but now Useful, relevant content is the key to rank your content. If you are writing, Google prefers Long form content, high quality In-depth articles, research which provides answers to the users. Rank Brain - Google Algorithm(launched in 2015) is a machine learning (AI) algorithm that Google uses to sort the search results.
   
    Optimize for multiple form of content: Blogs, videos, podcast(Audio), PDF’s/PPT’s , eBooks, Infographics
   
    (Some of the basic principles of SEO - Doing your keyword research, Having the keyword in the Title, Description, URL, Header tags in content with synonyms applies for all form of content)
2. Personal Search: In 2018/2019 Personalized search is on the rise. Examples of personal searches like Is ____ right for me?
    60 % + Growth in Mobile searches for “for me” in the past two years 80 % + Growth in Mobile searches for “Should I ” in the past two years. Source: Think with Google
    Listen more about Rise of personal search here >>>THE RISE OF PERSONAL SEARCHES - FIR Podcast Network
3. Voice Search/Conversational Search & SEO: In 2018, its about optimizing your content (website is just one of many properties you can optimize. Example: blogs, YouTube, audio) based on topics and relevancy. Google wants to give the users the best possible answers. Especially someone is using Google Assistant, Google Home, Amazon Alexa and other Voice Assistants If you want to rank well for Voice Search, then your content should provide the best answer. Take a look at this video on how Google gives the results in Voice Search. Web Marketing Academy� on Instagram: “I am bullish on these new and upcoming changes in the way we communicate, interact, buy, learn things. First the #Internet, #socialmedia,…”
4. Visual Search: Visual search examples - Google Lens, Amazon apphas the AI search functionality when you search for a product, similarly Pinterest Visual Search. In order to rank for those product you have to optimize your products with proper meta data including product ID, descriptions and relevant content. The Future of Visual Search in India. Google Assistant, Google Home
5. Mobile friendly website and Page Speed: One of the ranking factors today in mobile is the page load time and speed. Google gives preference to websites that loads faster especially when there is a slow internet connection. Average load time less than 3 second. Test your website and recommendations from Google here>>> Mobile-Friendly Test - Google Search Console
6. Usability: Another ranking factor (this is not new) Google always want to give the user the best user experience. Learn more about Usability here >>>> An Introduction To Website Usability Testing - Usability Geek
7. Technical SEO: Today SEO is also bit technical. Basic understanding about HTML, programming will help. AMP(Accelerated Mobile Pages. “The AMP Project is an open-source initiative aiming to make the web better for all. The project enables the creation of websites and ads that are consistently fast, beautiful and high-performing across devices and distribution platforms” Learn more here>>> Accelerated Mobile Pages Project
   
    I have written a detailed QUORA answer with useful links to learn by yourself here >>>>> Suresh Babu's answer to What do you think will be the biggest change in SEO come 2019?
8. HTTPS: If your website is not secured, Google Chrome gives a warning saying this page is not secured and will impact your user experience and SEO. Know more about Why https matters here >>> Why HTTPS Matters | Web Fundamentals | Google Developers
9. Customer Centric Approach, Customer-centric marketing backed with Data/Insights will help understand the customers better
10. Structured Data: In other words, an organized data structuredwithin your website. This helps search engine discover your website easily. Even thou its debatable if Google is using structured data, it is a good user experience, so anything good for the users is good for the search engines too. Learn more about how you can use structured Data here >>> Structured Data Testing Tool
11. Google My Business/Knowledge Graph: Google local, Google maps, local listings in Google is another important listings for a local business. Any local business can submit to Google for free. It is the easiest and fastest way to get into Google. Things to keep in mind while optimizing your local business: NAP - Name, Address, Phone number, description, category, reviews, Pictures. Google posts now allows you to post (just like blogs) events, products, offers for free: Web Marketing Academy� on Instagram: “Local Businesses are you Utilizing Google Posts❓ If not you missing a huge opportunity. It's Free and it shows up in your brand search…”
12. Video SEO: Optimizing your video, be it You Tube or any other video hosting website, basic SEO principles works, apart from basic SEO.
    
     (Some of the basic principles of SEO - Doing your keyword research, Having the keyword in the Title, Description, URL, Header tags in content with synonyms applies for all form of content)