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diff --git a/README.md b/README.md
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--- a/README.md
+++ b/README.md
@@ -3,29 +3,73 @@
 ## installation
 
 ```
+conda create -n megapixels python=3.7
 pip install urllib3
-pip install bs4
-pip install http
+pip install requests
+pip install simplejson
+pip install click
+pip install pdfminer.six
+pip install csvtool
+npm install
 ```
 
-## ascii
+## workflow
 
 ```
-xxxxdddd5xxdddd5555vvvv~xxxxdddd55vvvv7777~~~~xxxxdddddd5555vvvv7777
-xxxxdddd5xxdddd55v~xxxxddddddddd55vvvv7777~~~~xxxxdddd5555v5vvvv7777
-xxxxdddd555vvvv77~~xxxxdddddddd55vvvv77777~~~xxxxddd55555v5vvvv77777
-aaaaxddd5555vvvv77xxxxddddddddd55vvvvv77777~~xxxxddd55555v5vvvvddddd
-aaaaayyMMMMMqqqqddeeeexxxxxxdddd55vvvv77777~~xxaayyyyMMMMMqMqqqvdddd
-aaaaayyMMMMMqqqqqddeeeaaaaaayyyyMMqqqqqddddeeaaaayyyyMMMMMqMqqqqdddd
-ccccaDD%%%%%##qqqddeeaaaaaayyyyMMqqqqddddeeeeaaaayyyyMMMMMqMqqqq@@@@
-ccccc%%%###qqqd#@@eeeaaaaaayyyyMMqqqqddddeeeeacccDDDD%%%%%#%###q@@@@
-cccx%%%%###i##@#@eeeeaccccccDyyyM%##qddd@@eeeeccccDDyMMMMqMqqqq@@@@@
-llcccDDDD%%%%###@eeeecccccccDDDD%%####@@@@eeeecccDDD%%%%#%###q@&&&&&
-lllllSDDD%%%%###@llllcccccccDDDD%%####@@@@eeeecclSSD%%%%#%####@&&&&&
-llllSSSSQQ%%%##&&&lllllcclllSDDD%%####@@@@eellcllSSD%%%%#%####&&&&&&
-aallSSSSQQQQQ%%&&&llllllllllSSSD%Q%%##@@&&llllllllSSQQQQ%Q%%%#&&rrrr
-aaaaiiiiVVQQQ%%drrrrrrrrllllSSSSQQ%%%%&&&&llllllllSSSQQQQ%Q%%%%&rrrr
-aaaaiiiiVVVVVdddrrrrrrrraaaaiSSSQVdd%%&&rrrrrraaaaiiSQQQQ%Q%%%%rrrrr
-xxxxdddd55VVVddv7777~~~~aaaaiiiiVVddddrrrrrrrraaaaiiiiVVVVdVdddd7777
-xxxxdddd5555vvvv7777~~~~xxxxdiiiV555vvvv7777~~~~xxxxdddd5555vvvv7777
+Paper in spreadsheet -> paper_name
+  -> S2 Search API -> paper_id
+  -> S2 Paper API -> citations
+  -> S2 Dataset -> full records with PDF URLs, authors, more citations
+  -> wget -> .pdf files
+  -> pdfminer.six -> pdf text
+  -> Stanford NER -> named entities (organizations)
+  -> Geocoding service -> lat/lngs
 ```
+
+To begin, export `datasets/citations.csv` from the Google doc.
+
+## Extracting data from S2 / ORC
+
+The Open Research Corpus (ORC) is produced by the Allen Institute / Semantic Scholar (S2) / arXiv people. It may be downloaded here:
+
+http://labs.semanticscholar.org/corpus/
+
+### s2-search.py
+
+Loads titles from citations file and queries the S2 search API to get paper IDs.
+
+### s2-papers.py
+
+Uses the paper IDs from the search entries to query the S2 papers API to get first-degree citations, authors, etc.
+
+### s2-dump-ids.py
+
+Extract all the paper IDs and citation IDs from the queried papers.
+
+### s2-extract-papers.py
+
+Extracts papers from the ORC dataset which have been queried from the API.
+
+### s2-dump-pdf-urls.py
+
+Dump PDF urls (and also IEEE urls etc) to pdfs.json, ieee.json, ....
+
+### s2-fetch-pdfs.py
+
+Fetch the files listed in pdfs.json and process them.
+
+### s2-fetch-ieee.py
+
+Fetch the files listed in ieee.json and process them.
+
+### s2-extract-first-page.py
+
+pdfminer the first page from the dumped PDFs.
+
+### s2-extract-entities.py
+
+Extract named entities from the mined text.
+
+### s2-geocode.py
+
+Geocode known entities from the database.