I am also fairly new to this. I think if I had more discipline I would probably branch out and challenge myself a little more, although this month I took on jerkbaits and baitcasters at the same time. It's been frustrating when skunking after having mild success, but overall the results have been worth it.
I have a tendency to find something I do well with, and then keep using it until it's no longer effective. Last year it was chatterbaits, this year it's probably gonna be jerkbaits given the current trajectory.
Early on I would just mix it up until something bit, but I have recently found it to be more cost effective to narrow down to a bait type or two that should do well for the location and conditions, and then mix up the sub-types until something works. I also like to settle on baits that can be used in lots of areas and situations successfully. Like chatterbaits, or - for example - for this winter's colder waters, chatterbaits and moving baits in general were not so effective. I needed something that could suspend or stay stopped in the water, therefore jerkbaits seemed to make the most sense. From there, it's the subtypes of size, action, buoyancy, etc. I found some things that seemed to work so far, if there's fish nearby. So far I think that's been my main problem this year. Really seriously considering getting one of those castable sonar units so I can at least see if I'm casting at anything. They just splash so hard when you throw them...