If you are an adult, don't be put off by the idea of using children's books to learn. After all they are at the right level, and clearly children are successful at learning a language. But start with the easier ones, and enjoy reading them!
Voyage au pays des arbres
Le Petit Prince
Le Petit Nicolas
- a great set of comic books, although some archaic language. Ensure you buy them in French and not English!
Qui suis-je ?
- short texts in Easy French with grammar, vocabulary and exercises in Kindle format.
Madame le lapin blanc
Tom-Tom et l'impossible Nana
- another series, so read the first and if you make good progress buy the rest.
The French Experiment
- lovely website with 4 traditional stories recorded to practice your listening, with translations.