Practice it in custom matches by yourself a bunch, best way to learn.
Mostly though, the safest route is to start in the top jungle, start with the small mobs closest to your base. Avoid wraiths if you ever see them spawn until you have a few levels. Skip over to the other sides small mobs closest to their base, as long as you can see the majority of champs and they don't have a jungle. Work your way around.
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