Like many things in life, either you like it or you don't. As simple as that. Some start birdwatching very early in life others come to it at various stages in their life. When you go out birdwatching you will find it calms you down. In our hectic times this is very good news for stressed people.
However, you are also urged to start looking at things from nature's point of view. What equipment is necessary? Of course you will need a field guide. I believe that Collins Bird Guide by Lars Svensson, Dan Zetterström and Peter J. Grant, is still a very good field guide to take out. For German readers I recommend "Der Kosmos Vogelfuehrer", Author Lars Svensson.
Both books have brilliant drawings of all species, also maps show regular breeding, wintering or migration. Both books are still pocket size and have extensive information for field recognition of birds.
A good pair of binoculars is required with magnification 8 X 56 for use even in twilight; also possible is a glass with magnification 10 X 42. What suits you and your eyes best, please find out for yourself.
As for clothing, you should not go out wearing strong Colours such as yellow or red. Outdoor clothing is fully suitable and the cloth should not make a rustling noise. Have you got it all? Then start birdwatching.
Look at the above pic. Where are they? There are three common snipes hidden in the gras. They do their best to hide them from us humans. With patience you can spot them anyway. The rest is going out and look what there is to see for you.
Make notes, maybe mark maps with your findings. It makes sense to join a club. In the UK the first choice is the RSPC in Germany it would the Nabu or Naturschutzbund.
Some Rules for Observing Cranes
You should arrive at least one hour bevor sunset. Please allow for sufficient time for your walk from the car park to the observation post.