Links

Here is a list of resources I found that I like and get back to from time to time.

PHP

php.net
Password hash and Verify password
How to format date('Y-m-d')
PHPMailer
Design patterns in PHP

CSS

A Complete Guide to Grid
A Complete Guide to Flexbox
Advanced CSS-tricks and techniques
Use cases fixed backgrounds CSS
The most useful CSS3 features - (Calc, Filter, 3D, Ellipsis...)

JavaScript

JavaScript the right way
Stay in scope
More about scope
Interesting facts about Hoisting
The real reason to avoid jQuery
Levelling up your JavaScript
12 useful js hacks

Libraries

Highlight.js
ckEditor
amCharts

Design

Optimizing for Large-Scale Displays
Uncle Dave's Ol' Padded Box
20 websites get free vector designs images icons

Colors

paletton.com
Adobe Color CC

Tools

Google Analytics
Google Developer PageSpeed Insights
RegEx coach when want to know what your regexes are actually doing.
NameCh_k - Check if your name idea is avaliable everywhere...

Security

PHP and SQL-injection
mysqli_real_escape_string($str)
Mysql wildcard in LIKE with % and _

DataFlex

DataFlex learning center
DataFlex products
DataAccess WorldWide - Producer of DataFlex
DataAccess Europe - European Headquarters of DataAccess
frontIoT - scandinavian reseller of DataFlex
DataAccess Support Forum
DataFlex Search
3:d party charts library for DataFlex

COBOL

Installing a COBOL compiler on windows with cygwin

Learn to code

Learn to code based on your favorite cartoon or game
Scratch - visual programming
Programmering med barn, olika verktyg
Free Code Camp - Learn and get certificates

Machine Learning and AI

Barrel.ai - Network of Machine Learing enthusiasts in Malmö
awesome-machine-learning (framework list)
spaCy (language tech)
MIT AI course
wit speach API (fun demo)
scikit-learn
R-project
RapidMiner
TensorFlow

Business

The learning launch: How to grow your business with the scientific method