For your secateurs, snips, hedge shears and loppers, there are generally two types of blades - Bypass and Anvil. And on all of these tool blades you will see a bevel, an angle that ends at the sharp edge. This is what you want to sharpen - along the angle of the bevel. For sharpening your Silky Saw, see below.
BYPASS type tools only have a bevel on one side of the blade. The action of these tools is similar to scissors, with the two parts passing closely past each other.
ANVIL type tools have a bevel on both sides of the blade. The action of these tools is like a knife onto a chopping board, and the blade will cut onto a flat surface.
With a sharpening file of some sort (we use a medium grit diamond file), you want to follow the angle of the bevel and sharpen away from yourself. And regardless of what type of blade you have, 9 - 10 strokes along each bevel will bring your edge back quickly and effectively.
In regards to sharpening your Silky hand saw please visit How to Sharpen Silky Blades.