There is lot of farming guides for Clash of Clans. You can use lot of troop combinations like barbarian – archer or giant – wall breaker – healer. Or even with dark troops. Mass hog riders will crush a base easily. However, not all of the them are cheap in resource and time. Personally, I like to use goblin – wall breaker combo. It is the cheapest and most effective way for me. The best way is to find inactive base with gold mines and elixir collector outside of walls that full of resources. You don’t need to use any wall breaker then. Else few wall breakers to open the path and use goblins to steal resources from storages within the walls.