First, welcome to the forums!
Second, I always like to get "new" to "new-ish" bass fisherfolk set up with soft plastic worms like Senkos (or off brand).
My number one suggestion is to fish wacky style. For one, it is about the easiest way to rig a plastic worm there is. Bend the worm in half, hook it perpendicularly through the middle, fish slowly.
I recommend Gamakatsu Wide Gap Finesse in size 1 or 1/0; Gamakatsu Drop/Split Shot hooks in sizes 1 - 1/0. Owner Mosquito hooks are also good, as are Owner wacky hooks, but I personally prefer Gamakatsu's offerings.
Then I'll suggest getting some 2/0 and 3/0 worm hooks, O'shaughnessy bend worm hooks for Texas rigging. Some ⅛ oz bullet weights, too.
Look up how to rig the worm if you don't already know how. Both TX and Wacky rigging can be done in and around cover, weedy areas, around fallen trees, docks, etc. If you have a lot of that, grab some weedless varieties of wacky hooks mentioned. But for TX rigging, just rig the hook weedless (inside the bait).
Colors: I suggest "standard" colors like Watermelon, Green Pumpkin, Black, and variants of those colors. Perhaps some with a bright chartreuse tail, etc.
The other thing is to ask some old timers around the lake, at bait shops, etc., what works, what doesn't. Sometimes they're willing to share some good info.