Missions in EVE fall into five general categories: Courier, Kill, Mining, Trade, and Special missions. Courier, Kill, Mining, and Trade missions are further categorized into five different levels: level I through level V. Let's take a closer look at each category to see what each type of mission entails.
Courier missions are simply delivery missions where you move items from one station to another. The type of items can range from common items found on the market to mission-specific cargo containers. The size and quantity of items to move can vary greatly and can either be moved using whatever ship you are currently flying or may require the use of an industrial ship.
While the ISK reward for courier missions is a bit on the low side, it having no negative standing impact on opposing factions is a huge positive. This, added to the fact that courier missions are quite easy and can often be completed very quickly, means they are generally worth running. Every so...