My view is simple, pratical lab are supposed for u to get hands
on and make mistakes. U are supposed to do first, get stuck then
ask questions, correct ur mistakes urself or help by ur lecturers.
Believe or not, u will learn from this process.
This process is also use during ur working life. If u gong-gong
wait for ur boss to tell u everything then siao-liao, u will hear
ur boss doing the donald trump "U're Fired"