How to apply to google while you have not a degree

I m pleased being in this forum since i m looking to learn programing I have a question and I m looking for answers. I m a marine engineer but i want to be a web devlopper because it is the feild i want to work on I started to learn programing language called HTML my questions are

1. can i get a job as a developper into strong company like google without having a university degree ?
2. than if getting a job without college degree is possible , what are the possible ways to do that .
3. is there free online certafications acceptable for google or any big company ?
4. I wish you really read this questions and guid me