A few weeks ago I passed the web component developer exam (at middle august), but i forgot writing here in order to publish my result and experience. The exam was very easy, but sure, you need to study in order to pass, nothing is free in this life. In short, I read the HF book, when I finish that, then I re-read the book this time a little bit fast, and focusing in my weak points, weak points that I annotated at the first reading. Finally, I did not make any mock exam, but i would really wanted. Fortunately for those who are preparing for the test. Efraim!