When you are playing Shen, you should always start from Wraiths towards to Red buff, after you are done with red, move to Golems.If you have more than half hp, move to wolfs, if not, go back. Now kill Blue buff, and gank mid! If you succeed, go gank top, if not go back jungling (wraiths,wolfs,golems) When you done ganking/jungleing go back. Now, take red buff and gank bottom lane. Now you are ready to do drake with your teammates, ask mid player and your Ad carry to helped you out. By now early game should grow into late one. So just stay with your teammates, and go occasionally to jungle. Shen is not very good pusher but he can tank turret easily. Also, Shens ultimate is powerful thing, so I think I should learn you something about it. When you ultimate on your ally, always taunt all enemy players.

PROS
You have flash every 10 secundes.
Shen is even without itmes tanky.
Taunt, and Ki strike(if you stuck HP)
Global Ultimate!!!
Shield
Cons
Melee
Can be played only as tank.

Shen is very good farmer. With Ki strike and Vorpal blade, you can last hit minions easily. In jungle is pretty easy to get creeps. If you play solo top Shen you will need to stuck Vorpal blade, as much as you can.