Studied about my single year to get cash (5,5)
I believe the answer is:
ready money
'cash' is the definition.
(I know that ready money is a type of cash)
'studied about my single year' is the wordplay.
'studied' becomes 'read' (I've seen this before).
'about' shows that the letters should be reversed in order.
'single' becomes 'one' (a single thing - only one).
'year' becomes 'y'.
'my' reversed gives 'ym'.
'read'+'ym'+'one'+'y'='READY MONEY'
'to get' acts as a link.
(Other definitions for ready money that I've seen before include "Cash easily available" , "Means of immediate payment" .)