I’m not a newbie any more, now what?
So you finished your first Roman campaign and feel you know and understand everything in this guide; lucky you. Now you might want to try playing as one of the other factions in campaign mode; they will provide a very different experience and you will have to use everything you learned to adapt and tackle their unique challenges. You might want to try a longer campaign, if you played a short one before, or perhaps a short one if you did a long campaign. You can try ramping up the two difficulties. You could go and give multiplayer a go. You could try the BI campaign, if you have it available. Really from here on you have plenty of options.