A. Good is an adjective. The adverb is well
A1. use well (not good) with past participles (dressed/ known etc.): well-dressed, well-educated
A2. well is also an adjective with the meaning 'in good health'

B. fast/ hard/ late are both adjectives and adverbs (e.g. Jay is a hard worker. Jay works hard. (not works hardly)
B1. Lately = recently (e.g. have you seen BK lately?)

C. Hardly + very little, almost not. (e.g. We've only met once or twice. We hardly know each other)
C1. can use hardly + any/ anybody/ anyone/ anything/ anywhere (e.g. How much money have you got? Hardly any. (very little, almost none)
C2. I can hardly do something = it's very difficult for me, almost impossible.
C3. Hardly ever = almost never
C4. Hardly also means 'certainly not'