Are humans evolving since their first appearance?
Are humans evolving since their first appearance?


The idea of first appearance suggest an important misunderstanding. There is no such as a first appearance of humans (or any other species) that would not be arbitrary. The Homo lineage evolves and keep evolving but don't think of humans as being created at some point and then eventually evolving. Life came to existence 4.6 billions years ago and it is evolving and diversifying ever since but no species has ever been created anew.


  Is the evolution a very prolonged progress


The only, non-arbitrary definition of evolution is a change of allele (=gene variant) frequency in a population over time. Such change occurs several times every second in humans. So evolution is constantly occurring. It really does not take much time. However, I realize that when layman ask "How much time does it take for evolution to occur" they mean something of the kind "How much time does it take for a previously absent phenotypic trait to come to existence in a population?". The problem is that the answer very much depend on what phenotypic trait and what are the selection pressures on this trait.


  are we going to witness further evolution of the human spieces?


Yes, we had, we are and we will. Humans are still evolving and you might want to have a look at the post Human Evolution in Modern Times.


  If so, in which direction?


In plenty of directions in the same time. Each phenotypic trait will evolve (not completely independent of each other though). There is no single direction for a whole species. You should therefore specify the trait of interest for the question to make sense. Again I think that the post Human Evolution in Modern Times will help you.

Want to have a basic understanding of what evolution is?

Understanding Evolution (UC Berkeley) is a free online very introductory course to evolutionary biology. It will help you to very quickly raise you level of knowledge of evolutionary processes.