I'm a newbie too....I started 5 months ago. And I JUST started doing forward rolls with any sort of speed. Not much speed, but before I had to stop, move my hips, bend my knees, put my hands down, turn, push off, roll. So I worked on my own or with my teacher until I felt ready (and sensei though I was ready) to join the line. Everyone in my dojo rolls better and faster than I do. But that is ok. I will get it someday. Meanwhile, I just keep on practicing! That's all we can do.