Premium Camouflage: Tier 6+ Standard. This provides 50% bonus experience gains, 3% reduction in surface detection and 4% reduction in enemy accuracy. This is the gorgeous measure-22 camouflage.
Special mention needs to be made in regards to Alabama's gun handling. Her guns traverse a half degree per second faster than North Carolina's at a rate of 4.5º per second. Even in a hard over turn at top speed, Alabama will never out turn her turrets. If you put Mister Seagal on board with Expert Marksman, you can get this rotation speed up to 5.5º per second which is just wonderful.
All of these builds will begin with taking Priority Target. This is, in my opinion, the strongest of the tier 1 skill for Alabama. It will let you know when you've got the attention of the Red team and when it's time to start putting that agility and concealment to work.
You'll have 5 skill points remaining at this stage. Spend them where you wish. Good skills to consider are: High Alert, Superintendent, Basics of Survivability and Vigilance. Concealment Expert for the AA build and Manual Fire Control for AA Armament for the Concealment build aren't bad choices either. If you're using the Steven Seagal Captain, then Expert Loader is also worth considering. Skip it otherwise.
Survivability builds greatly benefit from doubling up on skills. Jack of All Trades reduces the reset timers on your Repair Party and Damage Control Party. Superintendent gives you an extra charge of your Repair Party. Vigilance helps spot incoming torpedoes. Basic and Advanced Fire Training gives Alabama the necessary teeth to keep safe from aircraft. These skills are optimal. Concealment Expert will help keep you safe from harm. Finally, Fire Prevention helps reduce the chance of fires being set while also reducing the maximum number of blazes that can be set from four to three.
Mouse: Alabama is an excellent credit earner, but she doesn't hold a candle compared to Missouri. If Missouri isn't available, then Alabama holds her own quite nicely, making around 350,000 credits before premium for a 2,000 base experience game. With her great AA power, shooting down even a handful of planes can greatly increase the amount of experience gained in a match, letting Alabama top the experience charts much more often than she might otherwise.
Mouse: Alabama will always suffer her citadel poorly in competitive environments. Using her speed and agility combined with her AA power, she's a good asset to the team. However, if she's ever caught out, she's a ready target for the enemy team. She is the less optimal choice when compared to ships like Bismarck or North Carolina.