diff --git a/README.md b/README.md
index bf31673..7806ac2 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,17 @@
 # tg2mastodon
 
-tg2mastodon is a Telegram bot to post messages in a Telegram group to Mastodon.
+tg2mastodon is a Telegram bot to post messages from a Telegram group to Mastodon.
+You should only use on public groups and set the bot to be able to read all the
+messages.
+
+**This is still a Work In Progress, please don't use at the moment, since also
+documentation is missing.**
+
+## TODO
+
+- [X] Publish text messages from.
+- [ ] Handle text > 500 characters (or mastodon instance limit).
+- [ ] Message attribution from telegram users (?).
+- [ ] Handle messages with 1 photos and caption.
+- [ ] Handle messages with multiple photos.
+- [ ] Add configuration variable to set mastodon message visibility.