This is a Turkish strategy I made for the 1700 AD start.
SO here it goes- Turkey begins in a blessed position in the 1700 Ad scenario. It has a large empire, good tech, contact with the Euros, and a tech the Euros don't have. It may not be able to achieve historical goals, but it has a decent chance at a diplomatic victory interspersed with conquest.
The first goal is to revolt into slavery and fanaticism. Whipping is extremely useful here. Also, begin to shop around Europe for nations to trade MT to, and also contact the Mughals and other Asians.
You'll find that Germany and Poland are open to being allies, and Russia will at least consider a defensive pact, as they will hate Austria more than you.
Take your starting stack out of the capitol and sick it on Iran. They hate you, nothing will make them like you. The effort expended in trying to do so is probably greater than the cost. Also, they are a threat to your border. So take all their cities except Herat. With the starting stack it is possible, and whip Baghdad or your capitol if necessary, but it won't be.
Once you have them down to Herat, capitulate them. Their vote as a vassal is more valuable then their last city.
While you were kicking Iran in the face, you should have been researching rifling. Once done, take what is left of your stack against Iran, bring it to the Austrian border, and upgrade the stack. Now this would be the time to whip the capitol. Don't whip Baghdad though, you want this to grow into your production city.
You want 5 cavalry, 10 riflemen and 10 cannons. They should be enough to take Belgrad and Vienna. This should be enough to capitulate Austria. In this case, their last few cities would be worth taking, but a) the Italians spawn there, and b) Austria before it collapses can be your techer. Direct their research along favorable lines while you direct yours somewhere else so you can trade. Austria will collapse anyways.Once it does collapse to Italians, declare war and take Milan and Rome, leave Nepal or whatever its name is for the Italians, and capitulate the Italians. One more vote for you.
So you've defeated your immediate neighbors, now what? After you have kicked Austria and Iran, switch into secularism. You should have traded for it from the Mughals, who are perfectly happy giving it to you. This will erase most of your maluses with the European civs who are likely Christian. Also now is the time for peaceful empire consolidation. Also, as Austria is hated by a lot of civs, our humbling of them should help your diplomatic standing. Begin making inroads with Germany, they make good allies, and their trade routes will rake in a bunch of commerce for you. On fact, you'll find this true for most European civs- their trade will empower you, and for the most part it isn't that hard. Only Spain and Russia will be difficult to befriend, also, England will remain aloof, but still open borders.
For Spain though, it will experience a bunch of revolts from the post colonial civs and ask you to join in. Say yes to all of them. These civs are pathetically weak, and will never amount to anything ever. There's no harm in pounding on them for brownie points with Europe. The only one you shouldn't pound on is America. It will produce a crapload of cities which means a bunch of foreign trade routes which produces alot of trade. I should probably mention that you'll be running free market,having either traded for it, or self teched it. I call this exploiting post colonial civs for fun and profit.
For Asian civs, You'll easily manage to win the trust of Mughals, you start as the same religion as them. China will likely also be a valuable ally. Japan won't. Open borders with it, but if America, or some European power asks you to war with them, do it.
Finally Korea and the Vietnamese are non factors. Expend only as much energy as you feel you need on them.
So now you're pulling in a bunch of commerce from trade routes, capitalism is multiplying that commerce and everybody who matters likes you. The oil industry enriches your empire mightily and gold isn't really a problem. Now what?
Well, you can switch to central planning and industrialism to begin building a modern army and navy from scratch. Then take over the places you are at war with that still exist if the Euros haven't vanquished them already and conquer them. The more population you have the more votes you have in the UN right? And now you go for the UN and win Diplomatic victory, or you can skip conquering those places, and gun straight for the diplomatic victory.