It depends on what you want to accomplish and what prior knowledge you have about relational databases in general and FileMaker in specific. The Training Series is a very good idea if you want to take and pass the certification test on FileMaker.
Thanks PhilModJUnk for the info. I don't want certification just a good knowledge base and the ability to build a good database from the start. Some of the tutorials I've watched are a little too basic so I'd like more in-depth instruction.