Taric's not a very good melee champ, sadly. His damage output never gets to be that impressive, and he's extremely slow with poor chasing/initiating abilities (the single target stun is really wonky. You can initiate with it at range, but by the time you get there it's almost worn off. You can try to snag someone who's running with it, but once again you have to let them get a head start for it to be full duration.)
A solid melee build for him is Boots (tabi/merc's), Aegis, Stark's, Nashor's, Guinsoo's and Spirit Visage. Good luck getting enough gold for all that.