I think it varies from style to style but Ju Jitsu is pretty much the fore runner to Karate, Aikido and definitely Judo therefore it contains a lot of these styles.
1: Yes but they're the basic Karate ones, one of the main ideals behind Ju Jitsu was to get your opponant in some sort of hold where by you have a hand free to take a weapon usually a tanto or knife and then kill them which is why it specializes in locks, grapples and holds.
2: So far in my first 6 weeks I've done some basic Jo and Hand Bo stuff.
3: The Dojo I train at tend to concentrate on the Jo and Hand Bo to start with, but it really does depend on your sensei the style they teach and what you need to know for the grading syllabus. After blue belt is attained my dojo start to specialize in sword work.