Start at Blue,then wraiths (heal with passive),do red.After,find a lane to gank,if not do your small camps.Always time your buffs,red and blue buff=5mins,wraiths=50sec,everything else is 1 min,not sure about whight camp.Buffs spawn in 1:55.So to keep track of buff timers,add 5:00mins to when you killed your buff.Dragon is 6mins,Baron 7mins,really REALLY important to call your timers even more important you last hit with smite or feast"R".Lets say i killed my blue buff at 2:15,2:15+5:00=7:15,call "ob 7:15".OB=our blue,OR=our red,TB=thier blue,TR=thier red.How I gank as Cho'Gath is that i auto-hit with red buff or rylai's,silence,then ensure death with rupture.Players would try to juke to rupture when you come in to gank,and waste time,so hold rupture.~taught by hotshotgg in his stream~.Now others would wait in bush then rupture,but its hard to land so if you miss,horrible gank.His ultimate is so strong for dragon and baron control.Remember to play with common sense and everything is almost situational,skill order,items,and even if you want to play Cho with your team.Quick tip,hes sometimes great with Yauso if you are good with your ruptures.Knock-up interupts,like velkoz.