diff --git a/.gitignore b/.gitignore
index 7f47a39..a57ebd7 100644
--- a/.gitignore
+++ b/.gitignore
@@ -16,6 +16,8 @@
 *.txz
 *.zip
 .*.swp
+*.pdf
+*.html
 .editix
 .idea/
 __pycache__/
diff --git a/includes/exp.adoc b/includes/exp.adoc
index 912d26b..cd171ac 100644
--- a/includes/exp.adoc
+++ b/includes/exp.adoc
@@ -71,6 +71,10 @@ This is, of course, by no means exhaustive. Anything below _Beginner_ is not lis
 ** Ansible _(Intermediate to Advanced)_
 ** SaltStack _(Advanced)_
 * Networking Concepts _(Intermediate to Advanced)_
+* DNS _(Advanced)_
+** PowerDNS _(Advanced)_
+** DNSMasq _(Advanced)_
+** Unbound _(Intermediate to Advanced)_
 ** VPN _(Intermediate to Advanced)_
 *** IPsec (both IKEv1 and IKEv2) _(Intermediate to Advanced)_
 **** StrongSwan _(Advanced)_
@@ -82,7 +86,7 @@ This is, of course, by no means exhaustive. Anything below _Beginner_ is not lis
 *** ICMP _(Intermediate)_
 ** IPv6 _(Intermediate)_
 *** ICMPv6 _(Intermediate)_
-*** SLAAC _(Intermediate to Advanced)_
+*** SLAAC/Router Advertisements _(Intermediate to Advanced)_
 *** DHCPv6 _(Intermediate to Advanced)_
 ** PXE _(Advanced)_
 *** iPXE _(Intermediate to Advanced)_