I'm a new GM leading a group of new players on an adventure path and we each have 2-5 sessions each under our belt. I occasionally will come across information while doing research that would probably be useful to my players, do I share this with them or let them figure it out on their own?
For example, I found a set of nice articles talking about useful gear and weapons that every party should have. Looking over this list, I see my players are missing most of it. Should I let them know?
I found several articles on how to make the most out of a characters stats and optimize their character. Should I let them figure it out on their own or point them to the guides?
To what extent do I share my research with them? I want them to succeed and enjoy the game, but not crush my challenges for them and make it boring.
If you are all enjoying the game, don't change it.
If you do feel like helping them, you could put some of the items you think they should have in random loot. You might try having them fight a bad guy with an ability you want to show them.
P.S. Optimization does not always lead to a better time.
If things are going well, don't change it, if you think they would be happier because of it, give a hint the next chance you get.
Don't tell them they mist a lot of things. My Dm did (called us stupid because of it in the proses) it sucks, and it doesn't make anything better.