Question
WHERE IS THE BEST PLACE TO PLANT A SHADED AREA OR WHERE THERES A LOT OF SUN

Answer
Japanese Maples can take the light the sun gives, and will grow even better with that bright light, but they can not take heat. They have very tender leaves that scorch easily. They also prefer protection from freezing, and wind. So to answer your question, part shade near other trees, or with morning sun, afternoon shade, near a building are best places to plant. Also try to keep water off of the leaves when the sun is on them. The water acts like a magnifying glass, and will burn the leaves when the sun hits it.
These trees do not like to dry out, so while it is getting established in the new soil, keep plenty of water on it.
Prune it occasionally, to keep its shape. The better you prune it, the better it grows. Try keep all of the upward branches off, and give it a weeping appearance.