I'm not sure how I will get on with this game as I am an average
Noble player but offer these thoughts to other players at a similar level to myself, based on starting 3 test games and playing through to the Middle Ages or so (no wins, I just quit because I was falling behind and/or getting bullied mercilessly by bigger rivals).
1. With 6 rivals it tends to get rather crowded very quickly. I was unable to build more than 4 or 5 cities before getting boxed in. An early land grab is a must and very careful thought must be given to optimal tiles to settle on.
2. If looking for an early religion, go straight for Hinduism. There has always been someone else getting to Buddhism first at 10 turns into the game. Having said that, religion is easy for Saladin, I easily founded 2-3 religions in my test games.
3. Terrain typically includes small pockets of desert and productive plains/grassland and
vast areas of jungle. Distribution of copper, iron and horses has been fairly good with a reasonable chance of having one or more within your immediate area. You might get jungle elephants too if you're lucky.
4. Barbarians can be a nuisance so defend your cities and key resources as soon as you can as they will come calling with axemen soon enough.
5. Exploring warrior units (or scouts if you have time to build them) are most useful when promoted with Woodsman I and II - they get to move two tiles when travelling through jungle/forest so can cover a
lot of difficult country at a time when you are filling in the further flung blank spots on the map and popping the last few undiscovered goody huts. There are plenty of animals out there with which to build up these promotions.
6. The camel archer UU doesn't become available for some time (Guilds req.)
Personally I have found these test games rather tough. In one game I had a respectable score (in top 2 or 3 of the pack) but this was due to culture and tech development and I was rather behind in the power stakes, resulting in the Chinese (with twice the cities and men) coming to kick my sophisticated but puny posterior.

In the other games my power rating was more respectable but city count, tech ability and score was much poorer (bottom of the pack on these games), not helped by missing out on several key wonders by a matter of single turns.

My problem is that I can't do both at the same time so don't know what strategy to use for the real game when I try it. *sigh*