Upside Down and Inside Out
With any pocket hole system, you need to avoid thinking in traditional ways and begin to think and plan "Upside Down and Inside Out". The reason for this, is with projects like tables, bookcases, and cabinets, the pocket holes often want to be placed on the underside of the project so they cannot be seen and for the assembly, it's often best to work from the inside out because in many cases you are working in a confined area and don't always have the room for inserting and tightening screws.
Pocket Hole Depth
Setting the depth stop on the drill bit is just as important as setting the jig for the thickness of wood you are using. Again if the collar on the drill bit is set wrong, or not tightened properly, the resulting holes could be too shallow or too deep depending on wood and the length of screws you are using, and again, some of the better jigs even have a scale on them to help the woodworker set the proper collar adjustment to get optimum pocket hole depth.
Biscuits for Joints
Dale sent in this tip for putting splines in the corners of picture frames or even boxes or anything that might have mitered corners. Dale suggests that he has used his biscuit joiner to make the cuts and then inserted and glued in biscuits. He didn't mention if he had made some sort of a cradle to hold his biscuit joiner in and align it with corner pieces but that might be something to consider for anyone venturing this modification. Thanks, Dale, a good tip.