It won't do you much good at this stage in the game. I second what someone said about MMRS. If you can memorize one bacteria every 2 days (really, take like, 30 minutes a day, not even) your life will be SO much easier. Summer of M1 year I also got a hold of some of the pharm/general path notes from one of the then M3's.
I did about an hour a day over my summer,MAYBE an hour and a half.
Not too taxing. Half an hour of MMRS and then half an hour of either pharm or path.
now, keep in mind, this wasn't done to "get ahead" this was done because I have a nearly pathological fear of failure

and thought that since I'd never HAD pharm or path before I was destined to crash and burn. This is not the case. you will be FINE in your M2 year (and yes, even be able to be prepared for boards (...you know, as prepared as one gets)) if you just take the summer off and ENJOY yourself.
So if you wanna read for your own betterment, or because you want to get a jump, go for it. If you feel like you SHOULD or HAVE TO don't. You don't. Enjoy yourself.
🙂