We have moved!
This used to be the starting point of the Litium Developer Education but from now on you can find all the material in a new format at start.litium.dev. The new start.litium.dev-site has all the material that used to be here but structured in a format more appropriate for self study, so head over there and give it a try.
If you still want to use the material that used to be here just select the litium-8-branch where everything is still available.