Hi Ryan,
Welcome to IceInSpace
Congratulations on your new scope.
That should give you plenty of things to look at.
For moon Saturn and Venus, start off with your 25mm eyepiece to centre it, then switch to you 9mm for more detail.
The included Plossl eyepieces should be quite reasonable quality for starters.
For star clusters and other Deep Sky Objects, you will mostly want to use the low magnification of the 25mm plossl.
For more detail on planetary objects, you could go to a 5mm eyepiece that will give you about 130xmagnification. But these can be difficult to use, and not much use other than planetary, unless you have a lot of cash to splash.
Maybe a 2x barlow may be better value, this combined with your included eyepieces will give you effectively another 12.5mm and 4.5mm eyepieces(s).
Best advice I always give to new starters is to get yourself along to a local observing session, try some other peoples eyepieces, talk to their owners and see what suits you and your scope.
Keep looking Up!