Ah, the adverb train station. If you want to find out about adverbs, there is no better place. An adverb tells you how something happens. Here is a train moving "quickly" on the track.

An adverb is simply a word that describes a verb (an action or a doing word). • He ate his breakfast quickly. The word 'quickly' is an adverb as it tells us how he ate (the verb) his breakfast.