Yes! We'd love you to try the service, so we offer all new account holders 30 minutes free.
In addition, every time you start a session, your first minute is always FREE. We don't think you should pay for 'getting to know you' time! This means you're only paying for getting down into the nitty-gritty of the real learning, not for establishing a question and level of need at the start.
Also, when study gets really tough, we have a session cap of 60 minutes, which means you'll never pay for more than 60 minutes to help with a homework problem - even if takes 100 minutes.