Memorizing everything you might need is not always a good and possible idea. You cannot remember everything for sure. You might a few commands and syntax but for everything else you will have to google at some point of time. Googling can also be hectic as you might not find exactly what you are looking for. So, its better to bookmark some really useful site like Oh My Cheatsheet. You can find things you need only click away. It really speeds up you work.
Oh My Cheat sheet
HTML (HyperText Markup Language)
The most basic building block of the Web. It defines the meaning and structure of web content.We can compare HTML with the Skeleton system of our body.
Cascading Style Sheets
Ruby is an interpreted, high-level, general-purpose programming language. It was designed and developed in the mid-1990s by Yukihiro “Matz” Matsumoto in Japan. Ruby is dynamically typed and uses garbage collection.
Font Awesome is a font and icon toolkit based on CSS and LESS. It was made by Dave Gandy for use with Bootstrap, and later was incorporated into the BootstrapCDN. Font Awesome has a 38% market share among those websites which use third-party Font Scripts on their platform, ranking it second place after Google Fonts.
Material icons are delightful, beautifully crafted symbols for common actions and items. Download on desktop to use them in your digital products for Android, iOS, and web.
ECMA Script 6
Oh My ZSH
A delightful community-driven (with 1500+ contributors) framework for managing your zsh configuration. Includes 200+ optional plugins (rails, git, OSX, hub, capistrano, brew, ant, php, python, etc), over 140 themes to spice up your morning, and an auto-update tool so that makes it easy to keep up with the latest updates from the community.