Are they any mock interview apps or websites I can use to prepare?
Hey Marianna, I did find this one on iTunes that might be helpful: https://itunes.apple.com/us/app/job-interview-app-questions/id475889617?mt=8 I also found this which lists some others as well: http://www.businessnewsdaily.com/6208-job-interview-apps.html
Forbes has a great article about the 50 most common interview questions! It's a good idea to write down an answer to each of these questions to prepare yourself for an interview. The article is here: http://goo.gl/XT6xvR
There are also a lot of really helpful videos of mock interviews and mock interview tips on YouTube, if you just search for "Mock Interview". Howdini has a lot of really great videos about this, here's one: https://youtu.be/epcc9X1aS7o
Try Interview 4 - https://www.interview4.com/job-candidates/, it’s a free online service that might help you prep. Good Luck!