Well, I'm very new to this game, and I really love it. But as I'm a modder for several other games, I want to give it a try at modding this game too. Problem is: I don't have any idea which files to edit, or even how to create a mod. Can someone explain this to me, or redirect me to a topic that explains the basics. For this mod of mine, I want to add a new weapon.

I've also been trying to get to grasps with this, but I think this sort of stuff ( LINK) is a good place to start.

Don't worry you will understand this all in time for instants I learned how to make actors in the thread I posted in the request section Title Zeno's list of pwnage Although there wasn't much pwnage to it than the title It started of as me listing things I wanted to see in CC but inspired me kick it up a notch and start spriting my own little faction.
A friendly tip: Actors are hard as F--k to make

Try Azukki's templates.

viewtopic.php?f=1&t=10247&hilit=mod+templates

zeno, learn to spell, please. firefox has a handy spellchecker for almost every field, AFAIK.
well, to learn how to mod, you have to understand that there are 2 parts to modding: spriting and coding. well, .ini editing is barely coding, but thats what we call it.
spriting is the easy bit. go grab the templates from here, and poke around seeing how the spriting is done. for weapons, you only really need 2 sprites (or one if you dont have a magazine) but you can have many if you want animation, custom gibs and custom muzzle flashes. actors (humanoids, crabs, rockets, drop ships) have heaps of sprites.
the other half is coding, which is basically editing variables in a .ini file to place the sprites together and make them work how you want. again, the templates contain .ini files with sufficient commenting to teach you how to do this, so picking them up and poking around is a great place to start.
DONT EDIT BASE.RTE
that'll ♥♥♥♥ up your game. make your own, new .rte folder.

hopefully this was helpful.

How do you get the game to use the custom base.rte folder?

Check the stickies.

viewtopic.php?f=1&t=10956

here's how I learnt to mod.

I went into existing content and backed it up. lets say it's the SMG. I modify it, see what happens when I change stuff, and then once I knew what a lot of the variables did, I restored it.

to make a totally new mod, either download the templates in this forum, or make a new folder called whatever.rte.

the .rte extension is essential.
copy the index.ini out of base.rte and change the code so it reads another ini called whatever.ini
make a copy this index.ini and rename this copy to whatever.ini. delete everything in whatever.ini and COPY IN THE CODE for your mod, in our example it's the smg.
re-name it, change filepaths so it references the right stuff, and you're on your way.

sorry, that's a brief and sketchy plan, but it takes a LONG time to explain it all, hope it helps.

There are really three or four ways to learn how to mod. You could check Lord Tim's modding stickies, or you could try Azukki's templates. Or, if neither of those help, you can try messing with the files to a mod, such as Kloveska or the Pelians.

Just ignore everything and run straight into one of the Vanilla .rtes, changing anything that looks cool or funny.

...

That's how I learned.

I never used Azukki's templates , and wouldnt ever use them , i think . Well try to learn how to mod your self . If you will need help , we will help . Most guys here didnt asked anybody's help to mod ( like Nachos ) . And modding cortex is very easy . Hard are : spriting , walkpaths . Anything other is easy .

I think my first mod is gonna be a gun that creates actors. lol

This is impossible , i think . Start from something really easy .

Dam, really? Wouldn't it be the same method as the link in the OP? Just replacing the bullet with an actor?

As i said this should be impossible . Make a shield from coalition soldier . That will make you lots of friends .