A few trigger definition questions.

I got a pretty good idea of most of the things but just a few things I don't get yet.

1. What are integers and how do you use them?
2. What are ubbersplats?
3. What are images?

I tried using image and ubbersplat triggers but I don't know what they do.

Integers are normal numbers, which are without "." so integers are 3, -7, 125 but they aren't -3.01, 0.04 etc.

Ubersplats are something on ground over the terrain. You can see this under buildings, under volcano etc.

Image is image, if you played Tides of Blood, I'm pretty sure they were using image triggers for hero preview slideshow.

Integers are, for Warcraft, any whole number and the negative of any of those numbers. (ie. -infinity ..., -2, -1, 0, 1, 2, ... infinity ). There is a limit however of -2147483647 to 2147483647.

Ubersplats are images that are applied over terrain, like blood, warstomp/thunderclap cracks.

Images are exactly what the name means, but there are some restrictions to using images in Warcraft. Here's a tutorial: http://www.wc3jass.com/viewtopic.php?t=2433

Edit: Ah, Jacek, you beat me to it. Actually the 'hero preview' ( It tells you which heroes the opponents choose. ) is a model with several different animations and textures.

For the sake of correction, ToB actually used a custom model which randomly plays animations, each animation showing a different icon. I don't think the image functions even existed at the stage which they did it.

Ok i get ubbersplats and images now but I still don't get integers. What is it's purpose in triggers and how do you use them?

You use them (usually) as control variables in a loop and in basic maths stuff.

And for storing some important value/number used in the map.

Blood is a Ubersplat, but as far as i know Warstomp and Thunderclap are Deformations

Thunder Clap has an ubersplat of cracks in the ground. I don't think Warstomp has one.

I was thinking about this solution, I just wasn't sure, but I guess these triggers work similarily.

I see I have messed Ubersplats with Ground Texture ^_^

No you haven't. Ground textures are also ubersplats.