I applied online through their website and within a week, I received an email to schedule a phone interview. They give you an option on what days and the time that you would like to be interviewed. I basically went online, researched a little bit on the interview questions. I decided to practice from leetcode where the questions get filtered. I would say they do have pretty good resources there. I Highly recommend it. I actually got a question I practiced from leetcode but I failed to communicate clearly. I believe that's the reason why I didn't pass the phone screen.