Inkscape Basics (because I forgot what I knew a week ago)

Resize Inkscape svg canvas to it’s content
Go to File -> Document Properties -> Page
Resize page to drawing or selection

Add guides helps with alignment etc.
Just click ruler and drag down from top, left or even top/left for diagnonal guide

Setup/Change snapping when moving objects around
Go to File -> Document Properties -> Snap

Change color of object
Go to Object -> Fill and stroke (Shift+Ctrl+F)