Is it too old to study

As you ask your question in English, let me try to answer you in English too :)
No problem at all, I have a couple of students who are around 40-50 YO and still studying basic business computer courses with me, and in many cases it is even easier for you to get into the universities or institutes of higher education as you might have extensive work experience in a certain area.
However, you might need to look at the following:
1) Do you have time to study? Can you get a balance between work, study and your own life with your family?
2) Your language skills - e.g How good your English is? Do you want to take some English course first? Are you get used (or are you ready) to write academic papers such as research findings / reports / assignments etc?
3) Can you accept for working with students who might way younger than you? As there might be quite a lot of group assignments in your studies.
4) Your work experience: depends on what area you want to study, your institute might requires you to obtain references from your existing or previous employer(s) to prove that you have certain work experience - perhaps in a certain area of your expertise.
Good luck with your career / study path! :)
We are all talking about life-long learning these days anyway :)

no problem at all

no... it's never too later to study,

however you might have to put the course you are taking into account.
can you handle it? or can you get a long with the classmates.

No problem. Many old people (over 60 years old) are going to take courses.