Which programming lanuages should I avoid learning because nobody will be using them in 5 years? -

I want to learn some new programming languages, but I want to avoid learning something which is obsolete with a solid time What transactions in the background should I avoid? Because very few people will use them in 5 years? You are asking wrong questions. Learning a new language can give you a different perspective on programming.

You will apply the same underlying ideas in different programming languages ​​differently, or learn a whole new programming paradigm.

What to decide for learning, you should be guided by the availability of your good resources (online, or books), where your questions can be answered.

In addition, we all know that you should learn Pearl 6. This way, for the first time you can actually apply that knowledge, 5 years ago;)