Wellingo is an application to learn English that's completely free. It includes all the lessons, as well as the rules and vocabulary to learn English. 

To start learning English, simply choose the section you want to learn. Then, start memorizing and learning the words.

It's not as difficult as you might think. To memorize, you just need to read, listen and repeat. You don't need to write anything down. It's easy. 

In the sections that are included in Wellingo, you can learn English letters, numbers, directions, colors, people, time, weather, seasons, contrast, body, travel, hotel, around the city, places, shopping, restaurant, food, beach, hobbies, Health, in the office, work, computer.