Hey man,
Don't feel bad. The public side can be very tough and frustrating. My dad and I have fished it over a couple handful of times and we haven't had the best luck. Though last year in the fall we found a few productive places. The biggest part of it is locating the fish and learning how they pattern on Anna. I would follow Teddy Carr's website and Charlie Bowles as they have them patterned up pretty well most times throughout the year. Their reports can be found on sturgeon creek marinas site, High Point Marinas site and by googling either of their names.
Once summer patterns start you have to fish fairly deep on Anna. What's deep? Subjectively on Anna its anywhere from 15 - 25 feet deep. Believe it or not Charlie said in one of his recent seminars down at BPS you can't fish deep enough in the summer. You want baits that are gonna get down fast and work the bottom or close to the bottom when you find fish. He also said when you find one work that spot as good as you can because typically they will stack up. That's what I heard at the seminar at least.
Deep diving cranks, jigs, drop shots, swimbaits, and other heavy lures such as plastics with heavier weights. Keep in mind sometimes these fish may suspend so you want to vary your fall rates until you figure out what they want.
As far as spots go, there are alot of them on Anna and once you locate a few you should really focus on breaking them apart as good as you can. That's the best way to learn Anna. You can't figure it all out in one day, let alone a week.
Other advice: Think outside of the box, remember to go natural as this is 90% of the time a pretty clear lake in most parts. There are coves and areas where water runs in where it can muddy up, don't know how good patterns like that work in late spring on Anna but it may be worth a shot to find off colored water if possible. Also go natural with your bait selection. Shad, herring and perch run the lake so those types of colors and lure imitators are good for starters. I forget what the primary forage is for bass but I'm sure shad are a good portion of their diet. If you contact Charlie Bowles he can let you know about that.
I know early to mid spring which is probably fading fast (as summer approaches) jerkbaits, lipless baits, senkos and swimbaits are solid selections from what I've heard from other anglers. When summer gets here I'd go with some of the above mentioned baits I stated earlier.
I am by far no expert on Anna and probably never will be, it's unforgiving most days, but this should be able to help you at least some what. Like I said use the resources (guides, locals, tackle shop folks, etc to help you out as much as possible). Also invest in a lake map. Later bro.