I have a little problem-whenever I want to select a bone in pose mode, I select an object behind it instead. If I want to select the bone, I have to select it in edit mode and then switch to pose mode and that is realy slow and anoying. how can I fix this?
That's likely because there are many overlapping objects. A way to work around this is to press and hold Alt and RMB, and while still holding the mouse button, move the cursor so it is over the name of the object you want to select and then release.
This, basically gives you a list of all the objects "under" the mouse, disregarding the view Z distance, so you can pick the one you want.