Coming to study is possible but you'll have to have cash to support yourself, vocational training is also possible and you'd generally earn money while training so that's probably more approachable, if you already have an academic degree that's a definitive plus, for IT people three years of work experience counts as a degree for these purposes. For all that there's also the option to get a visa for the purpose of finding a job but you should definitely shop around beforehand otherwise that's just an expensive tourist visa. If you, say, already worked as electrician or lorry driver you might lack qualifications to work here but that kind of experience will still count for companies hiring you.