Just like the title says, it is a self-management guide to help you cope with anything that might be bothering you. Look, there may be an elegant way to do this but we got there with this?**** Sony, more instructions, ok?Back to our music space shortage on the Walkman: We solved this by buying an extra memory card of 64 GB. Excellent product and fast reliable service. Again, no interference and no dropouts. Considering the simplicity of the rack and tie down rubber straps, you do have to add your own additional bungee cords, foam noodles or towels etc. You can pair this latest D9 model with another D9, but cannot pair D8 and D9 units together. Comfortable: Yes they are! Even sitting infront of my fan and making the call, the voice is audible and clear. Size is about 94%/ they fit moderately well. Don?t hesitate to get them!