Not Updated For Current Season
The masteries shown here are not yet updated for the current season, the guide author needs to set up the new masteries. As such, they will be different than the masteries you see in-game.
Start with a cloth armor + 5 hp potions, start in the blue golem, smite the golem, kill wolves > wraiths > smite lizard > double golem, bp, buy boot, and gank.
If they have a lot of casters or cc: buy a banshee, after the merc, aegis and heart of gold, maybe a FoN after Banshee, GA > Randuin > Thornmail.
If the have a lot of DPS: Buy heart of gold, merc > Aegis > thornmail > Banshee > Randuins > GA