The LearnToMod website has updated a few times, since the For Dummies or Minecraft Modding for Kids books were published.
Here's an overview of how to get started and where to find the badges ...
First, LearnToMod users can now connect their Minecraft account to their LearnToMod account by means of the new Server Admin Page16 (which used to be the Minecraft Connect Badge). Get there by clicking the green square on your LearnToMod Homepage. Then watch the tutorial video. After pressing 'Start Server' button on the badge, and receiving your temporary ip address, open Minecraft on your computer. Right now, we recommend using version 1.9.2 Here's how to change your minecraft profile to a new version: https://help.mojang.com/customer/portal/articles/147592313. Note that any newer version or The Latest Version are Not currently compatible.
When connecting to your LearnToMod Minecraft server, don't forget to select multiplayer, then Direct Connect. Then enter the temporary ip address assigned to you. After 10 min of inactivity you'll need to press the Start Server button again. When you're transferred to your minecraft world, you can start loading mods into your mod chest.
If you don't have Minecraft, that's fine. You can unlock most badges using the simulator. Just ignore any messages telling you to connect.
Here's how to find the badges:
At the top of the page is a navigation bar, click on 'Learn.' This will direct you to the badge index page.
All new LTM users should complete the badges in the 'Skills And Drills' category - start there.
Note: on the main badge index page, you'll see two 'Skills and Drills icons. Both contain the same badges, but you have option of testing your badge mods in the new vox-l engine or testing them in the "skills and drills: old interface".
(If using the old interface .... then scroll to the bottom of the badge instructions and press the skip simulator button after completing each badge. Then test in Minecraft.)
Clicking on the "Skills And Drills" Wrench and Pencil icon will bring up a dialogue box: Do it! Click that. That will take you the index page for the category -- there will be subcategories (grey tabs in the middle of the page). Complete the badges in the 'Getting Started' section first then move onto the 'Learning to Program' badges.
The Getting Started badges will show you how to write and run your first mod. The voxel engine should load automatically - if doesn't then try updating your browser, switching to a different browser or downloading it manually from the Artifacts shop.
To get to the first badge in the 'Learning to Program' section click on 'Functions' then 'Saying Hello.' You can skip ahead to the next badge, if you need to, though they're meant to be completed in the order in which they're presented.
The Zoo, Magic Wands, Sidekick and JS Mini Game badges can be tackled after the 'Skills and Drills' badges.