Several companies provide free online resources for beginning French learners, such as the BBC, Duolingo, Rocket Languages, Babbel and Learn French with Alexa, as of 2015. Although these sites provide materials at no cost, some do require users to register.
Listening, speaking, reading and writing are all important communication skills to practice when learning a new language. Some websites may emphasize only one or two of these. Visit several sites to find exercises that allow you to sharpen all of your skills.
Online lessons are useful for acquiring knowledge at a measured pace without feeling overwhelmed. Even so, memorization is essential for obtaining a critical mass of words to use. Set aside time each day for this, and use flash cards or smartphone apps to help build your vocabulary.