here is a great collection of farming videos i have added them as a play list but will also list them individually in case you need some specific farming tips
Back to basics - grinding for gold with balloons and minions. As few asked if I am using gems for my walls, I once again wanted to show that no gems needed for resources - just farm and know where, how and when to do it in the most efficient way!
This play list has some quite advanced farming strategies good for when you have a higher level town hall and troups.Clash of Clans BEST Attack Strategy - Millions of Gold and Elixir Without Losing Trophies! Farming.
Here's a long guide on the best way to get gold and elixir without losing your trophies, with a couple battle examples. You should be about to get 2,000,000 gold and elixir an hour.
This video shows how to farm with lower level troups and TH7 or TH8 a good starting point for farming strategy