Arduino Language

I'm new to coding Arduino so I was wondering if there was any good sites/books/blogs that could help me learn the language? I have seen books that look good but they all have mostly projects and I have a littleBits Arduino module so I can't do most of the projects they mention. I just need to learn the language because I have lots of projects to do.

Thank you

You have here an identical post. Maybe is a good point to start.

Thank you for the post, think I'm going to get one of the books now.