Being fairly new I'm a little lost on the math for this. I read that there is a -2 on attack rolls in the description of "Flurry of Blows". Then in the chart I see FoB has its own attack bonus (+1/+1 at level 3). Then there is the base attack bonus (+2 at level 3). Then the STR bonus. Do all these add up or does the FoB attack bonus replace the BAB for this attack?
Sorry if the question sounds stupid. I'm still learning and the books are not quite clear.