Youtube is a great and powerful tool. Highly recommend Ben Finegold. He is not for everyone but if you like his style you can learn a lot!
Edit: Here is one of his videos on the Sicilian https://www.youtube.com/watch?v=liecBr62eqA
He has more where he goes into specific lines of it
Hey guys, I want to learn the sicilian but i dont have any books, are there any other sources I can study from? preferably free or little cost, I have an ICC membership and ChessBase.