Now this is a subject I hate with a passion (how suitably Greek), but the best way I have found to get over it is simply immersing myself into Greek radio (Derti 98.6) and television shows (Eleni + Kalimerouda). I session Youtube with music videos (Kostas Markakis, Nikos Vertis etc, day-time talk shows (already mentioned) and kids television shows (Peppa Pig, Winnie the Pooh). I use Memrise to back this information up but this is one thing that people using their native, everyday language trumps learning using pictures. The 2 do complement each other very well and I will frequently switch between the 2, writing the Memrise words down until my brain is too tired to continue and then I may watch some English music to calm it down.
The wisdom of Athena, the knowledge of Minerva 