diff --git a/notes/documentation/answers.md b/notes/documentation/answers.md
new file mode 100644
index 0000000..2cde55f
--- /dev/null
+++ b/notes/documentation/answers.md
@@ -0,0 +1,7 @@
+# Answers
+
+## CSV
+
+Read a csv file into Beam:
+
+<https://stackoverflow.com/a/41171867>
diff --git a/notes/documentation/beam_docs.md b/notes/documentation/beam_docs.md
new file mode 100644
index 0000000..ab884b3
--- /dev/null
+++ b/notes/documentation/beam_docs.md
@@ -0,0 +1,12 @@
+# Beam Documentation
+
+## Transforms
+
+FlatMap:
+
+<https://beam.apache.org/documentation/transforms/python/elementwise/flatmap/>
+
+
+I/O Transforms:
+
+<https://beam.apache.org/documentation/io/built-in/>
diff --git a/notes/links.md b/notes/links.md
index cd356f6..746f829 100644
--- a/notes/links.md
+++ b/notes/links.md
@@ -2,10 +2,4 @@
 
 ## Data
 
-Full dataset:
-
-`wget 0 http://prod.publicdata.landregistry.gov.uk.s3-website-eu-west-1.amazonaws.com/pp-complete.csv`
-
-Current month:
-
-`wget 0 http://prod.publicdata.landregistry.gov.uk.s3-website-eu-west-1.amazonaws.com/pp-monthly-update-new-version.csv`
+https://www.gov.uk/government/statistical-data-sets/price-paid-data-downloads