hello Im learning about Scrum, and noticed that there is a certified scrum master course
is this worth it?
or can I learn all of that from books and online, to implement in my work?
Not for nothing, but most certifications you will find in relation to technology are crap. You can just as well learn how it works yourself and save the fees. To add to this, unless the certification is from some well known and respected authority, no one will likely give it much credence.
It would be better if this question is answered by somebody who attended the course and can make some real summary instead of pushing some "assumption" without real experience with the course.
I attended both Certified Scrum Master and Certified Product Owner.
What is wrong on these certifications:
What is good on these certifications:
Are trainers good enough? Yes they are. Among trainers you can meet people like:
What about Ken Schwaber? Ken Schwaber was trainer at Scrumalliance as well before he left and started his own association scrum.org. They are rumors why that happened but I will not spread them (because I don't know if they are truthful). If you blame ScrumAlliance for "crappy" certifications be sure that certifications from Scrum.org are same or worse because some of them can be taken simply by doing online test.
For me those two courses were the best I have ever attended (many my colleagues shared this feeling) but also the most expensive. The real experience can be dependent on trainer - I had experience with two and my colleagues with another three and all were excellent.
Another good point for somebody can be meeting other people implementing agile and discuss their own problems and solutions. It can be also start of local agile oriented community.
Much of this stuff is better caught than taught but if this credential will help you at your job, why not?
[Follow up] Even PMI is getting into the Scrum game http://www.scrumalliance.org/blog/129-pmi-develops-agile-certification (which seems sort of like Sarah Palin promoting literacy, but there you are.)