Individual German lessons

I'm a native speaker who grew up in Germany before moving to Lisbon. I have a university degree in German and English Studies, a Master in teaching German as a foreign language and a teaching course from Goethe Institute. I also teach German literature at an IB school and have a lot of experience teaching and tutoring old and young. Do you want to start learning, brush up your German or need tutoring? Do you have problems with Grammar? it's not as unaccessable some may say. I have a lot of material....