TeachMorse is a Windows application that works on Windows XP through to Windows 10 and provides a way to play practice text at different speeds. It uses the Howard Cunningham teaching character string which is similar to the 'Koch' method.
This software was originally written by Gary Bold, ZL1AN (now Silent Key) who was a long time contributor to NZART's official Journal, Break-In and was known as 'The Morseman' by many in the Amateur Community. The software now maintained and enhanced by Andrew Mitchell, ZL1AF.
You can download the zip file for TeachMorse here: TeachMorseV8.00.zip
Save the zip file to its own folder and unzip the contents.
Learn CW Online is a website that provides an online set of tools for learning Morse Code using the Koch method.