For a quick tour at how to use Liquid have a look at these introductory articles - Liquid intro articles.
Here are some cool demos of Liquid code snippets
If you are unsure of whether a particular setup is doable or if you have a specific question head out to the Developer forum
It’s easy to translate discussions from English into Deutsch, Español, Français, Italiano, Nederlands, Português, Polski, ελληνικά, русский, Svenska, Čeština and Türkçe. Look for the translate link under every discussion.