depends on the subject
Me personally typed everything. Best thing is to write all the class notes, and then summarise typing up.
e.g.
English - typed
Maths - class notes only
Chemistry - class notes were already typed by teacher anyway
Physics - started typed, most of them ended being handwritten, although a large chunk exist as .jpeg files (as I missed several lessons)
Japanese - vocabulary list in excel, use tables for grammar structures...
GENERAL TIPS
Sciences - yes: since it is based heavily on the syllabus, yes do make notes of every syllabus dot-point. Do past papers
Maths - no: apart from class notes, don't bother. do past papers and questions.
English - optional: put together a couple of good examples (as much as you could remember) and practice essays.
HSIE - yes: most of these subjects are like English in that they require, summaries where possible, practice essays. Depends on what is specified.
Languages - yes: put together a vocabulary list in Excel, or flashcards; and in Chinese/Japanese flashcards/tables for characters. Practice questions
Other skills e.g. Music - no, just practice
Major work e.g. Software. D&T - for software, yes, everything else probably only brief needed, then again depends on the course.
Visual Arts - probably a good idea
Engineering - yes
IPT - yes
That said you can use other people's notes.