Show how you would synthesize each compound, starting with an ester containing no more than eight carbon

Question:

Show how you would synthesize each compound, starting with an ester containing no more than eight carbon atoms. Any other necessary reagents may be used.
(a) Ph3C¬OH
(b) (PhCH2)2CHOH
(c) PhCONHCH2CH3
(d) Ph2CHOH
(e) PhCH2OH
(f) PhCOOH
(g) PhCH2COOCH(CH3)2
(h)