Does anyone know how to make animations like these? http://epic.net/eng/our-skills What language is used? Know of any tutorials? Any tips? I'm trying to implement some similar animations (at a certain point) on my own website.
One of the best methods for a developer to learn is to check how things are done on websites he likes. The easiest and simplest way is to right-click on the element and select inspect element (or something similar) and then you can see all of its styles. I don't know exactly what animation are you talking about, but for example, let's take those little squares moving at the bottom. It's just empty element with .gif as a background! There's no code behind it, sadly Most animations you will ever need to implement on the website can be done in CSS(3), sometimes with a little bit of JavaScript.
Use JS Libraries. To make text on the sides like that use some typography libraries. To make counters just some basic javascript/jquery. There are a lot of libraries out there for whatever kind of animation you might want. PS: http://codepen.io is a great resource for that