I need a good tutorial on how to render a high quality, high poly with LOTS of grass in a large scene, faster then usual.
I have a fairly decent computer, but I only have 16 GB RAM and 4 cores running at 3.4 Ghz.
It still takes hours to render an animation.
I need the ray tracing and shadows and I also need reflections on my water material (though the water isn’t a water simulation, just a material).
I also need lots of trees with leaves.
I am using Blender’s internal renderer.
Welcome to the world of CG.
It’s pretty common to render 30-60min for one frame in CG. Often more, especially in 1080p
But even if you cut it down to around 10 mins which I try for smaller projects, you still need ~5h for one second of animation.
There’s no way around a renderfarm. No tutorial will make one CPU calculate the render equations faster.
So if I want to be able to use my computer and do other things in the meantime, which options do I have when it comes to a Renderfarm?
How do I do it? I don’t have a billion dollars, so it needs to be cheap AND efficient.
If one machine renders 1 Frame in 10 minutes, 10 machines render 10 frames in 10 minutes.
Naive fallacy. 
Better start to billion-up.
The more machines you got, or rent, the faster it goes.
All the machines you don’t use for rendering, you can use to do other things in the meantime - obviously 
I know it’s not ideal, but thats the point most blenderheads reach.
Game content creation, Stills, and playing around can be done in your parents basement, but if you want to go to movie/animation production… there’s no playing… you got to invest, do and achieve.
That or cut back in quality close to the point you start to weep.
there are quite a few render farms out there. might I suggest googling “blender render farm”? the most common free one that i know of is http://www.renderfarm.fi/ i haven’t used it and i’ve heard it has some reliability issues but i could be COMPLETELY wrong about that.
otherwise… you’ve got to pay to play for the most part.
If I’m not wrong, the green button render farm has a 10 dollars trial, and I think you can do a lot.
Renderfarm.fi doesn’t work. I can’t connect to the site.
Maybe you can try Fox renderfarm,$20 trail for register,it is faster for your animation.