Your rating is 1500 and you can't even identify your openings. I'd worry about middlegames and endgames if I were you. 4...a6 is the Kan Sicilian, NOT the Taimanov Sicilian.
The Taimanov Sicilian is 1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6, NOT 4...a6, which again, is the Kan Sicilian.
I need some help with some opening lines for this opening. I have seen FM Simplechess play it before with 4...a6 and im wondering if it is good or not.