diff --git a/README b/README
index ea1ece8..6aab25c 100644
--- a/README
+++ b/README
@@ -34,28 +34,25 @@ gobyexample.com signups
 * no drm
 
 = topics
-* time formatting
-* connection pool
-* typed json parse/unparse
+* worker pool
+* rate limiting
+
+* string formatting
 * web app
+* time formatting
+* typed json parse/unparse
 * gzip
 * base64 encoding
-* listing files
-* tls server
-* tls client
-* buffered io
-* tcp proxy
 * http streaming server
 * http streaming client
-* http proxy
 * templating
-* hipache port
 * ssh
 * dns
-* tty
 * iota
 * oauth for google domains
 * testing
+* markdown (blackfriday)
+* mongo
 
 * setting up go env, hello world
 * deploying to heroku
@@ -63,8 +60,6 @@ gobyexample.com signups
 * apps with multiple named binaries
 * shipping a package (structure, github, docs)
 
-* blackfriday
-
 = program ideas
 self-signed cert generator
 command line client for public json api
diff --git a/src/01-hello.go b/src/01-hello.go
index 91e7378..6ed73fb 100644
--- a/src/01-hello.go
+++ b/src/01-hello.go
@@ -3,5 +3,9 @@ package main
 import "fmt"
 
 func main() {
-	fmt.Println("Hello World")
+	fmt.Println("Hello, world")
 }
+
+// == running
+// $ go run 01-hello.go
+// Hello, world
diff --git a/src/xx-errors.go b/src/xx-errors.go
index 290a5e5..00f37c1 100644
--- a/src/xx-errors.go
+++ b/src/xx-errors.go
@@ -17,3 +17,7 @@ func main() {
 	_, e := myFun(42)
 	fmt.Println(e)
 }
+
+// == todo
+// custom errors
+// data conveying errors
diff --git a/src/xx-postgres.go b/src/xx-postgres.go
index b2e888a..5fbc186 100644
--- a/src/xx-postgres.go
+++ b/src/xx-postgres.go
@@ -50,8 +50,16 @@ func main() {
 	fmt.Println(dropRep)
 }
 
+// == running
 // # start postgres
 // $ createdb gobyexample
 // $ cd xx-postgres
 // $ go get
 // $ ./xx-postgres
+
+// == todo
+// connection pooling
+// concurrency
+// re-connection
+// errors
+// explain
diff --git a/src/xx-redis.go b/src/xx-redis.go
index e57e7fc..5ec8659 100644
--- a/src/xx-redis.go
+++ b/src/xx-redis.go
@@ -63,7 +63,14 @@ func main() {
 	time.Sleep(time.Second)
 }
 
+// == running
 // $ redis-server
 // $ cd xx-redis
 // $ go get
 // $ ./xx-redis
+
+// == todo
+// connection pooling
+// concurrency
+// reconnection
+// errors