Should I directly read the new Universe?

I want to read both the old and the new universes, especially the major events, such as the Secret Wars, Ultimate Invasion etc.

But since the new one is so fresh I feel like I can catch up to it if I wanted. Should I wait till I am done with the old stuff, should I read some essential stories and begin the new one, or should I directly begin the new one?

Any kinds of advice would be appreciated, thanks in advance.