Here you find some of my favorite go-to information. Handy–for me and hopefully for you, too.
Making Half-square Triangles my favorite way
Hows and Whys of Leader Ender Projects
Measurements for Setting Triangles and Corners
Binding Calculator–straight and bias: http://www.quiltersparadiseesc.com/Calculators/Binding%20Calculator.php
Cutting a Fat Quarter into Scraps with NO WASTE:
Mitering Corners (you will have to read several posts):
or, all in one post http://www.saltwaterquilts.com/2012/05/tutorial-quilt-border-with-mitered.html