I'd like to know if pendulum 'divination' works.
I bought one and I know how to use it, but I just want to know if it really works.
In case that it doesn't work... is there any other methods?
There are dozens of methods for divination. It's all about your attitude toward the act and also your personal interpretation of the results that determines how successful any given divination attempt is. Pendulum divination has worked for me, but (as with most divination techniques) it takes some practice to really know what the signs mean.