It's not a 'RTS' in the conventional way. The devs call it a 'Tactical Fleet Simulator'. You focus completely on your fleet, there's no resource gathering or anything. It's a slow-placed game where you only control a few ships at most (10 max, or something), but designed in such a way that even just one ship is plenty to have fun. Battles don't end in just a few seconds of twitch-clicking. In fact, twitch won't really help you here, given the pace of the game. Depending on which weapons you carry, you can try to take out shields, or bypass them and attack the hull, or specific parts of the ship. Basically, depending on what your detection capabilities are (you get pretty good customization options for your ships), you can highlight individual parts of the enemy. Shield generators, individual weapons, radar, etc. Here's the thing, you can give a specific target (could be different ships, too) for each specific weapon you have. You'll also have to manage your energy to power your weapons, shield, engine, etc, so using all your weapons all the time might not always be efficient.
Lots of fun. There's a demo around, but it's not very user-friendly. I found the readme for that did its job well enough, though. The way the full game introduces you to the game is very well-done, it's a shame they didn't release that part as a demo.