In the last 25 years I tought: private and church high school students, unemployed, system administrators, entrepreneurs, and private students.
The education system was school, course organizer, corporate and individual. 
Some companies I have taught so far:
- Számalk, Budapest
- IBM, Székesfehérvár
- MOL, Százhalombatta
- Rossmann, Üllő
- AGB Nielsen, Budapest
- SKC Kft., Debrecen
- Mealtrade Kft., Ebes
- Karát Kft., Debrecen
- Autocomp 95. Kft., Debrecen
- HBZ Kft., Debrecen
- Evonik Agroferm Zrt.
- etc.
The following list is not complete:
~ MS Office
WORD, ACCESS, PPT, OUTLOOK stb.
EXCEL VBA, programming (makros)
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~ ECDL
