Hej SirKtje, welcome to Sauerbraten!
I suggest you also idle around some IRC channels (On Gamesurge). Try: #Sauerbraten and #Cube2. I hope to see some good work from you soon. :D

Thanks :D ill give my best ;)

hey welcome to the community,
best way to start is to dive into the code and implement some stuff on your own.
There exist many mods, but few are the work of more than an one-man-army.
like matuka already said, you should check out '#sauerbraten' on irc.quakenet.org, but imo '#cubicmatter' is also a good point to start.
cube2 is the trolls-home, better check out #octaforge on irc.oftc.net, #sauer-clan and #ogros on irc.gamesurge.net.
im also looking forward to see some maps of you ;)
hf

Funny, I made maps for Source-Engine Titles too, AND i'm new here! But I liked solitude and never posted any of my maps online besides an Alien Swarm one. I started doing this because my Steam Account was hacked and i've been too lazy to get it back. So I started doing this. And lemme tell you; it's very fun. Anyway, hope to find some good stuff of yours! -Xweert ftw!