After writing about quilts so much lately I decided to share the research I've had saved for the last two years. I have already done the groundwork in trying to find the easiest ones for a beginner (like me!) to undertake.
All Sorts' great visual tutorial for the Crazy Nine Patchquilt - I suggest you buy a rotary cutter and mat for this one or cutting your pieces accurately without those could drive you bonkers.
There are instructions for a crib-size version of a Flock of Triangles quilt in Denyse Schmidt's first quilt book. Altering this to make an adult-size quilt will require some math. I'm just warning you. Here's an inspirational post from blogger Marirob who made this one as her very first quilt, yes, first!
Lady Harvatine's doll-size Confetti quilt tutorial. So cute.