README.md: update with local preview and good practises

Signed-off-by: Artur Raglis <artur.raglis@3mdeb.com>

README.md

@@ -1,2 +1,40 @@
 # 3mdeb-website
-3mdeb.com website source code driven by Hugo
+
+## Local preview
+
+1. Run local server: `./scripts/local-preview.sh -b http://localhost:1313`
+1. Go to [http://localhost:1313/](http://localhost:1313/) to view the changes.
+
+_NOTE_: Feel free to replace `http://localhost:1313` with desired IP address
+and port.
+
+## Good practices
+
+### Grammarly - a must have for content verification
+
+Grammarly is a great, free tool for all bloggers and anyone who needs to write
+documentation in English.
+It will let you know if you skipped a coma or made a typo, as well, as it will
+check advanced grammar mistakes, too. Bear in mind, that the free version has
+its limits, so you need to keep an eye on it at all times and still, you are
+the one who distinguishes when to use a/an or the, as it only suggests changes.
+
+Two versions of Grammarly are available: a plugin for Chrome/Chromium or online
+application. You need to create an account (it's for free) to be able to use
+Grammarly.
+
+Visit the website [Grammarly](https://app.grammarly.com/) and create an account.
+
+>It is a MUST-HAVE application for anyone who writes posts or documentation, so
+feel obliged to use it.
+
+### Creating titles - Emotional Marketing Value Headline Analyzer
+
+<https://www.aminstitute.com/headline/>
+
+The free tool, which analyze headline to determine the Emotional Marketing Value
+(EMV) score. Headline is analyzed and scored based on the total number
+of EMV words it has in relation to the total number of words it contains. This
+will determine the EMV score of headline. Most professional copywriters'
+headlines will have 30%-40% EMV Words in their headlines, while the most gifted
+copywriters will have 50%-75% EMV words in headlines.