For non diety games assuming your not going to move your settler out of the jungle which is an option, i almost always look for ideal areas, hard settle on a lux by a river or Hill w/ river, & next to mountain.
For techs : writing, Bronze working, Animal husbandry, Lux as needed, rush education , Acoustics & Guilds.
Build order : Scout(jag or Pathfinder), Monument(depends on hammers), Grainery. Rush buy a worker if needed. If no huts/religious CS, Shrine & Library. Jungle pantheon is great, + food is average, unless you have a large number of bananas
Policies i usually go tradition or honor, sometimes liberty, but i just steal workers or rush buy them. Pushing out an early settler is also nice. I do not bother to improve bananas , as the science bonus is better then the extra food. Farm River tiles, improve lux, leave rest jungle. soon as you get guilds, start laying down trade posts.