hi,
i am new to the kde world, so i decide to use a kde distro.
I started to search a distro but i really don't know how to choose between those:
openSUSE, netrunner, chakra or kubuntu?
i need a distro for programming, to study and for use steam.
my pc is an hp pavilion dv5.
Please help me
thank you everybody

Advice for choosing a distro is always difficult and a question of taste. You will actually just have to find out yourself.
I'm personally using Kubuntu for about 3 years now, have used Debian for about 5 years before and started also some years earlier (starting around year 2000) with SUSE.
What I like about Kubuntu is the big user base in the whole Ubuntu environment. You will have many packages available, basically all you would have in Debian plus many packages built by software developers themselves. Virtually everybody packaging programs for Linux will provide an Ubuntu package.
Some of my components need propietary drivers (graphics card, tablet until a while ago). Support for integrating these is best of all Distros I know in Ubuntu systems.
I'm programming C for DIY devices like the Arduino and microchips, creating some occasional sounds and had also steam installed and used for a while last year. Plus doing all the ordinary stuff like listening to music, watching TV, storing photos, writing texts, mail and surfing. It's all as decent as it gets with computers in our times.
Downturns of Kubuntu may be the probably rather small distro bug squad (just an assumption based on how many of my bug reports never got triaged) and the fact that you will have to read configuration hints for Ubuntu and adapt them to Kubuntu yourself. With this I mean that hints may be written for the Mir desktop and you will have to use the command line.