It's not that complicated a game, so long as you monitor the victory screen you can counter anything the AI is doing, depending on difficulty of course.
Make sure you spread quickly at the start, new cities should get walls up quickly, get archers early to protect your cities early on. (I usually just buy a Slinger and upgrade it).
Try to block off other civilisations spreading, buy land where possible, take advantage of any opportunities, capturing other civilisations settlers near the start is a game changer.
Other civilisations usually hate me but it's fine, I don't need them to like me.
The only annoying aspect of the game is the positions the AI builds cities, way too close together, the game will often start you within three tiles of the another civilisation.