how can I load textures I used to use slick util in lwjgl 2 so how do I do now http://forum.lwjgl.org/Smileys/classic/angry.gif
LWJGL 3 has STB (https://github.com/nothings/stb) included, which is a lightweight utility library for loading images, sounds and fonts.
You can look at the tests (https://github.com/LWJGL/lwjgl3/blob/master/modules/core/src/test/java/org/lwjgl/demo/stb/Image.java) or the javadoc (http://javadoc.lwjgl.org/org/lwjgl/stb/STBImage.html) for examples on how to use it.