So what is it like

First year is pretty chill. Much better than college as class sizes mean more 1 on 1 time with teacher. However it lacks in social life as much less people to be friends with.
Second year workload ramps up a bit but as long as you stay on top of homework and schoolwork you'll be fine. Can be tricky if you get caught behind.

You should spend your free periods doing something productive i.e homework, it'll just make life less stressful

Is it better than secondary school?