Welcome to RMRK! I don't know if I have any specific suggestions for scripts. Generally, I think that the message system in VX Ace is very limited, so I would certainly recommend that you pick up some of those. I've written
a couple, and Yanfly has also produced a
popular message system.
I personally quite like the DBS in VX Ace, but if you are looking to enhance it, then Yanfly has some
great scripts for that. If you are looking to change it altogether then dark_falcao has a great
ABS.
There are lots of sideview battle systems out there too, so if you're looking for something like that, let me know.
Otherwise, if you are looking for scripts, I recommend my
Script Searching Tutorial and I recommend that you look at the
RMVXA Script Index.
That said, scripts can only go so far. The most useful thing to do when first starting out is to learn how to event and make good use of that resource. Any game you make will require heavy eventing, and most RM users probably only use it to about 20% of its potential. Investing some time to familiarize yourself with events at the outset will ultimately improve your game and speed up the game creation process.
I hope you enjoy your stay.