Start at Blue Buff. Take care of that and then go on Wolves, then Wraiths and then Golems. After that u are lvl 3. U can gank before if someone pushed too much, but in practive now start ganks on lane taht is best for gank. Gank as much as u can. When u can't just go in jungle and farm. After u reach lvl 6 then gank a lot. Just use Q on enemy, then ulti and then W and E at the same time... Enemies have no chance of escaping. In teamfights try to harras from behind with Q, and go in when AD carry or AP carry goes to close and it is hit by Q. Then just E to pull him to you and W to survive until your alies come fully in figth. When u take care of carry just go on most squishy targets. And remeber to use your W couse it's a great shield and it can save u many times.