Work on the intro and the index chapter

levels/files/files-add

@@ -1,23 +1,24 @@
 title = Interior design
-cards = checkout commit-auto reset-hard file-new file-delete
+cards = file-new file-delete
 
 [description]
 
-Our client want some new furniture! You'll discover that they have a very special taste - please add some more furniture that matches this style and make a commit!
+Today has been stressful and exhausting. Let's make sure you know how to interact with your current environment, before doing fancy Git stuff.
+
+You're moving into your student apartment, but soon discover that some furniture is missing!
 
 [setup]
 
 echo A yellow cupboard with lots of drawers. > cupboard
-echo A really big yellow shelf. > shelf
-git add .
-git commit -m "A cupboard and a shelf"
+echo A small yellow shelf. > shelf
 
 [win]
 
-NUM_FILES="$(git ls-tree --name-only -r HEAD | wc -l)"
-YELLOW_FILES="$(git grep -l yellow HEAD | wc -l)"
-test "$NUM_FILES" -ge 5 && test "$YELLOW_FILES" = "$NUM_FILES"
+# Add two more pieces of furniture (in matching colors).
+NUM_FILES="$(ls | wc -l)"
+YELLOW_FILES="$(grep -l yellow * | wc -l)"
+test "$NUM_FILES" -ge 4 && test "$YELLOW_FILES" = "$NUM_FILES"
 
 [congrats]
 
-Thanks! Our clients says that they really like what you picked!
+Don't you immediately feel more at home?

levels/files/files-delete

@@ -1,10 +1,11 @@
 title = Unexpected Visitors
-cards = checkout commit-auto reset-hard file-new file-delete
+cards = file-new file-delete
 
 [description]
 
 *ring ring* Oh no! You wanted to meet with your parents in your student apartment and your alarm did not go off in time to clean your room!
-"Coming!" you yell while you jump out of bed. Now quick! Remove all litter and trash you can find by using `rm [file]` and commit your changes.
+
+"Coming!" you yell while you jump out of bed. Now quick! 
 
 [setup]
 
@@ -12,14 +13,17 @@ echo Very smelly socks. > socks
 echo A tiny couch table. > table
 echo An empty energy drink can. > can
 echo An empty bag of chips. > bag_of_chips
-git add .
-git commit -m "weekend"
 
 [win]
 
-NUM_FILES="$(git ls-tree --name-only -r HEAD | wc -l)"
-test "$NUM_FILES" -eq 1 && test "$(git ls-tree --name-only -r HEAD)" = "table"
+# Remove all litter and trash.
+! ls | grep bag_of_chips &&
+! ls | grep can &&
+! ls | grep socks
+
+# But make sure to keep important things!
+ls | grep table
 
 [congrats]
 
-Your parents are happy to see you (and of course your neat and tidy apartment)!
+Your parents are happy to see you (and, of course, your neat and tidy apartment)!

levels/files/files-move

@@ -1,28 +1,27 @@
 title = No sleep required
-cards = checkout commit-auto reset-hard file-new file-delete file-rename
+cards = file-new file-delete file-rename
 
 [description]
 
-Our client just let us know they don't need sleep! Huh.
+Actually, you decide that you don't need any sleep.
 
-Because of that, they won't require a bed, and have asked you to build some other piece of furniture from the wood.
+Because of that, you won't require a bed, and can build some other piece of furniture from the wood!
 
-Can you rename the object into something else, give it a new description, and make a commit from that?
 
 [setup]
 
 echo A yellow cupboard with lots of drawers. > cupboard
 echo A really big yellow shelf. > shelf
 echo A comfortable, yellow bed with yellow cushions. > bed
-git add .
-git commit -m "Initial furniture"
 
 [win]
 
-NUM_FILES="$(git ls-tree --name-only -r HEAD | wc -l)"
-NUM_BEDS="$(git ls-tree --name-only -r HEAD | grep '^bed$' | wc -l)"
-test "$NUM_BEDS" = 0 && test "$NUM_FILES" -ge 3
+# Rename the bed into something else, and give it a new description!
+NUM_FILES="$(ls | wc -l)"
+! test -f bed && test "$NUM_FILES" -ge 3 && ! grep -r "yellow bed" .
 
 [congrats]
 
 Neat! It even still looks a bit comfortable!
+
+You head out, eager for your first lesson at time travel school!

levels/files/sequence

@@ -0,0 +1,3 @@
+files-add
+files-delete
+files-move