full purchase order
Not Updated For Current Season
You should start with the Krugs, with a good leash you should be able to kill the Krugs without smite and level up. Then take out the Brambleback (Red Buff) and use smite to help you. Then take out the chickens, you should then be level 3, go to the other side of your jungle and work your way around it, use smite on the Toad or the Blue buff depending on preference, and then Go back and buy the Skirmisher's Sabre, and possibly make a start on the Devourer enchantments. You can ow go and solo the dragon, although you may need to kill a few more camps until you are level 5 first.
Once you are level 6, you should be quite confident on taking out the enemy jungler and ganking, so you can invade the enemy jungle. You should also get help to kill the Rift Herald ASAP, and then you can solo it a second time before it becomes Baron Nashor.
After reaching Level 16, you should by now have the BloodThirster, an unconventional item for this champion, although it will allow you to solo the baron at level 16 if you have 30 stacks on your Skirmisher's Sabre. After this, you should be pretty confident on taking out almost any champion 1v1 although don't overcommit in team fights, as you rely on being able to get hits off to survive. Good Luck and Have Fun!