The Omen makes an excellent Level 2 security mission ship and can cope with some Level 3 missions too. In PvP, the Omen is a reliable and balanced damage-dealer. With its decent tank, above-average drone bandwidth and the ability to swap laser crystals on the fly, it can adapt to combat at many ranges. However, at skirmishing ranges (20–30 km) it excels. In general, the Maller is preferred for brawling-range combat because of its superior tank. The Omen Navy Issue is even better at skirmishing, but costs considerably more, making it a choice for more experienced PvP pilots.
General support skills and fitting skills will be useful. Gunnery and capacitor support skills make a big difference to the Omen's capacity to deal damage, navigation skills help with skirmishing tactics, and armor tanking skills bolster the ship's defenses.
The Omen has a substantial drone capacity, and Amarr ships, in general, include some bonused drone platforms such as the Dragoon and Arbitrator, so stepping into Amarr cruisers is a good point for a new pilot to think about drone skills. Drones level V will require a little patience but will pay off in piloting many ships, and is a good medium-term goal. Other drone support skills will be useful.
In the long term, a pilot flying the Omen often will want to consider training for Tech 2 medium lasers, which deal a little more damage and open up more tactical options through Tech 2 crystals. Tech 2 Scorch crystals, in particular, make pulse lasers able to project damage out further, helping the Omen skirmish well.