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Description of the fields
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ID
Usually, this would be an entry of a creature referring to creature_template.entry. However, Biohazard included several trainer lists by refering to their id. For more information, see Reference_list.
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SpellID
The spell ID from Spell.dbc. If the ID is negative, it's pointing to a reference template.
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MoneyCost
The cost that the player needs to pay in order to learn the spell in copper (1 gold = 100 silver = 10000 cooper). If you get this information from a data site such as Wowhead, be sure to take into account that they usually post the discounted prices based on friendly to exalted with a given faction.
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ReqSkillLine
The required skill the player needs to have in order to be able to learn the spell. See ID in SkillLine.dbc.
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ReqSkillRank
The proficiency in the skill from reqskill that the player needs to meet in order to learn the spell.
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ReqLevel
The level the player needs to be in order to learn the spell.