Always start with boots and 3 pots.When u have enough money just recall and buy 2 Doran's Blade or just 1 for damage , Vampiric Scepter for life steal and upgrade your boots in Berserker's.Next item must be Infinity Edge for damage and for critical chance.Then upgrade your Vampiric Scepter in BT and start farm it.At least u need some attack speed that's why you're supposed to buy PD.If you want to ignore Tornmail reflect damage just buy Last Whisper and is done....Last or the 5th item (how u want) must be Guardian Angel if u really want to carry.

You can change Summoner Spells in Heal and Flash / Exhaust and Ignite....fell free to play how you want:D:d