Digitalmod:
If you're just looking to get on the air with a Class E AM shortwave rig, the easiest and cheapest route would be to buy one of Stretchy's Lulu transmitters. He's running a Xmas sale on them at the moment for HFU members:
https://www.hfunderground.com/board/index.php/topic,38921.0.htmlHowever, if you want to have some fun and learn something in the process, you should try building your own "Lulu". Later you can move onto higher powered rigs if that's your fancy.
For starters, join the homebrewpirateradio Yahoo Group, where you will find schematics and photos of all sorts of homebrewed transmitters, plus a willing support group to answer your questions and help you build your rig.
Here are a couple of links with more info on the Lulu for you:
http://www.qsl.net/lu8eha/lab_ref2.htmlhttps://hfunderground.com/blog/?p=72There is a solution out there if you want to take the plunge with a higher powered Class E transmitter, pulse-width modulation and DDS/VFO in kit form, however you really should have an oscilloscope to simplify the Class E tuning procedure and some prior transmitter building experience:
http://www.shortwaveradio.co.uk/projects.htmWelcome to the dark side!