diff --git a/README.md b/README.md
index 2b4a4a5..77496a5 100644
--- a/README.md
+++ b/README.md
@@ -1 +1,8 @@
-This python package allows syncing of SLURM accounts with LDAP accounts.
+# jasmin-slurm-sync
+This python utility is used by [JASMIN](https://jasmin.ac.uk) to keep [SLURM Accounts](https://slurm.schedmd.com/sacctmgr.html#OPT_account) in sync with users' LDAP tags.
+
+It gets a list of ldap tags for each user from LDAP then converts that list to SLURM accounts using the mapping provided in config.toml.
+It then gets a list of current SLURM accounts for the user using [sacctmgr](https://slurm.schedmd.com/sacctmgr.html) and compares the two sets.
+Then it runs the correct [sacctmgr](https://slurm.schedmd.com/sacctmgr.html) commands to add or remove the user from accounts to make the sets equal.
+
+When running in daemon mode, it does this for every user then sleeps for an amount of time specified in config.toml, before running again.
diff --git a/config.example.toml b/config.example.toml
index 3cf3263..8d5c721 100644
--- a/config.example.toml
+++ b/config.example.toml
@@ -1,10 +1,14 @@
-ldap_server_addr = ""
-ldap_search_base = ""
-ldap_search_filter =  ""
+ldap_server_addr = "" # The address of your ldap server.
+ldap_search_base = "" # The search base for ldap.
+ldap_search_filter =  "" # A filter to apply to the search.
 
-required_slurm_accounts = [""]
+required_slurm_accounts = [""] # SLURM accounts (as mapped by ldap_tag_mapping) which are required before user is synced.
 
-daemon_sleep_time = 300
+daemon_sleep_time = 300 # Time between syncs when in daemon mode.
 
+# A map of ldap tags to slurm accounts.
+# An ldap tag can manage multiple slurm accounts
+# But a slurm account can't be associated with multiple ldap tags,
+# this will cause unxpected behaviour.
 [ldap_tag_mapping]
 "" = [""]