First to dig mine in Alaska generated an influential book (3,7)

'influential book' is the definition.
'das kapital' can be an answer for 'book' (book by Karl Marx). I'm unsure of the 'influential' bit.

'first to dig mine in alaska generated' is the wordplay.
'first to' indicates taking the first letters.
'mine' becomes 'pit' (as in a mining pit).
'in' is an insertion indicator.
'generated' is an anagram indicator.
The first letter of 'dig' is 'd'.
'alaska' anagrammed gives 'askaal'.
'pit' put within 'askaal' is 'askapital'.
'd'+'askapital'='DAS KAPITAL'

'an' is the link.

Can you help me to learn more?