Keep looking all around the map as soon as you start. Pick a point and go in a small angle so that you move out just a little bit at a time. You will see a marker appear with "?????". This may take some time, and you may find some money or capsules, but you will find the Dragon Radar along with two Dragon Balls in the first area. Do the same type of search pattern on each area to find everything; even places to fight and level up, along with friends who will give you skills and even a level up or two.