Update cross-links in docs

Author: edongashi

README.md

@@ -2,8 +2,12 @@
 
 `pg_diffix` is a PostgreSQL extension for strong dynamic anonymization. It ensures that answers to simple SQL queries are anonymous. For more information, visit the [Open Diffix](https://www.open-diffix.org/) website.
 
-Check out the [Admin Tutorial](docs/admin_tutorial.md) for an example on how to set up `pg_diffix`.
-See the [Admin Guide](docs/admin_guide.md) for details on configuring and using the extension.
+**For administrators:** Check out the [admin tutorial](docs/admin_tutorial.md) for an example on how to set up `pg_diffix`.
+See the [admin guide](docs/admin_guide.md) for details on configuring and using the extension.
+To install from source, see the [installation](#installation) section.
+
+**For analysts:** The [banking notebook](docs/banking.ipynb) provides example queries against a real dataset.
+The [analyst guide](docs/analyst_guide.md) describes the SQL features and limitations imposed by `pg_diffix`.
 
 ## Installation
 

docs/admin_guide.md

@@ -152,17 +152,7 @@ Default value is `*`. Any user can change this setting.
 
 ## Restricted features and extensions
 
-**TODO:** I think this kind of information is better put in the notebook tutorial? Or if you want it here it seems incomplete or something. Needs work...
-
-For users other than `direct`, various data and features built into PostgreSQL are restricted. Among others:
-
-1. Issue utility statements like `COPY` and `ALTER TABLE`, beside a few allowlisted ones, are not allowed.
-2. Some of the data in `pg_catalog` tables like `pg_user_functions` is not accessible.
-3. Selected subset of less frequently used PostgreSQL query features like `EXISTS` or `NULLIF` are disabled.
-4. Inheritance involving a personal table is not allowed.
-5. Some of the output of `EXPLAIN` for queries involving a personal table is censored.
-
-**NOTE** If any of the currently blocked features is necessary for your use case, open an issue and let us know.
+For a detailed description of supported SQL features and restrictions, see the [analyst guide](analyst_guide.md).
 
 Row level security (RLS) can be enabled and used on personal tables.
 It is advised that the active policies are vetted from the point of view of anonymity.