Where can pay with BTC to electrical Institute for getting training course .
Well there's one school in bitcoin friendly Switzerland that accepts bitcoin payment for tuition fees:
http://www.cryptomudra.com/2017/10/switzerlands-lucerne-university-accepts-bitcoin/So its just a matter of time before other schools globally that will accept it, just a matter of time. But currently, there's no one I can think of that accepts bitcoin for course you are looking for. I guess for now you have to convert your bitcoin to fiat just to be able to pay the school and enrolled your courses.
Many regions do not accept bitcoins now. It may take a while to adapt bitcoins in the regions. Hence, exchange the bitcoin into your local currency and use it for all your purposes.
Many of the countries are still not accepting bitcoins but there are some countries in which the accepting of bitcoin has started for online shopping. But if you have a bitcoin and you want to buy somethings on this you can easily transform bitcoins into your desire currency through online various exchanges. Its not a difficult task for anyone. Because it is a crypto currency and it easy change to any currency anywhere.
Yup this is the only options available for him for the meantime. Its not really difficult to do, maybe the OP just really wants to used his bitcoin, unfortunately, its still not yet widely accepted especially universities both offline and online courses.