Here are some links to useful quilt stuff - I've used most of them!
Best Hanging Method For Small Quilts - although I only add two triangles, both at the top of the quilt, I see no need to have them in all four corners.
Half-Square Triangles and Maths Formula
Single Fold Bindings for Small Quilts and Mug Rugs
How To Sew A Non-Binding Binding [Facing a Quilt]
Squaring Up Half-Square Triangles
Continuous Bias Binding Tutorial
The Quilter's Cache - if you need a block pattern, you'll find it in the huge free library!
Epic HST Technique
Binding Flange Tutorial
How To Backstitch Small Designs [Plus Lazy Daisy Tutorial]
Free online quilt calculators