My job I am working as C# programmer. I develop computer applications using Microsoft Visual Studio. I only make applications for Windows. I would like to learn to develop apps for Android mobiles. The problem is that i don't have enough free time for my hobbies. I work 8 hours each day so I only have weekends for learning purposes. I spend 1 hour each day improving English or Portuguese. The new technologies evolve a lot every year and I am afraid of that my programer skills get deprecated in a short time.