diff --git a/README.md b/README.md
index 7af67286..1bd55781 100644
--- a/README.md
+++ b/README.md
@@ -59,7 +59,7 @@ One can install ``block2`` using ``pip`` (note: for very new Python versions, th
       pip install block2==<version> --extra-index-url=https://block-hczhai.github.io/block2-preview/pypi/
       pip install block2-mpi==<version> --extra-index-url=https://block-hczhai.github.io/block2-preview/pypi/
 
-  where ``<version>`` can be some development version number like ``0.5.3rc15`` (see https://github.com/block-hczhai/block2-preview/tags for a complete list of version numbers. The letter ``p`` is not needed). To force reinstalling an updated version, you may consider ``pip`` options ``--upgrade --force-reinstall --no-deps --no-cache-dir``.
+  where ``<version>`` can be some development version number like ``0.5.3rc17`` (see https://github.com/block-hczhai/block2-preview/tags for a complete list of version numbers. The letter ``p`` is not needed). To force reinstalling an updated version, you may consider ``pip`` options ``--upgrade --force-reinstall --no-deps --no-cache-dir``.
 
 The detailed instructions on manual installation can be found [here](https://block2.readthedocs.io/en/latest/user/installation.html#manual-installation).
 
@@ -78,6 +78,8 @@ Documentation: https://block2.readthedocs.io/en/latest/
 
 Tutorial (python interface): https://block2.readthedocs.io/en/latest/tutorial/qc-hamiltonians.html
 
+Example script for models: [Fermi-Hubbard](https://block2.readthedocs.io/en/latest/tutorial/hubbard.html), [Bose-Hubbard](https://block2.readthedocs.io/en/latest/tutorial/custom-hamiltonians.html#Bose-Hubbard-Model), [Hubbard-Holstein](https://block2.readthedocs.io/en/latest/tutorial/custom-hamiltonians.html#The-Hubbard-Holstein-Model), [SU(2) Heisenberg](https://block2.readthedocs.io/en/latest/tutorial/heisenberg.html), [SU(3) Heisenberg](https://block2.readthedocs.io/en/latest/tutorial/custom-hamiltonians.html#SU(3)-Heisenberg-Model), [t-J](https://block2.readthedocs.io/en/latest/tutorial/custom-hamiltonians.html#SU(2)-t-J-Model).
+
 Source code: https://github.com/block-hczhai/block2-preview
 
 For a simplified implementation of ab initio DMRG, see [pyblock3](https://github.com/block-hczhai/pyblock3-preview). Data can be imported and exported between ``block2`` and ``pyblock3``, see https://github.com/block-hczhai/block2-preview/discussions/35.
diff --git a/docs/source/tutorial/custom-hamiltonians.ipynb b/docs/source/tutorial/custom-hamiltonians.ipynb
index 283e3f7b..218b4f7e 100644
--- a/docs/source/tutorial/custom-hamiltonians.ipynb
+++ b/docs/source/tutorial/custom-hamiltonians.ipynb
@@ -570,8 +570,8 @@
         "    basis = [(Q(i), 1) for i in range(NB_MAX + 1)] # [012..NB_MAX]\n",
         "    ops = {\n",
         "        \"\": np.identity(NB_MAX + 1),                           # identity\n",
-        "        \"C\": np.diag(np.sqrt(np.arange(1, NB_MAX + 1)), k=-1), # ph+\n",
-        "        \"D\": np.diag(np.sqrt(np.arange(1, NB_MAX + 1)), k=1),  # ph\n",
+        "        \"C\": np.diag(np.sqrt(np.arange(1, NB_MAX + 1)), k=-1), # b+\n",
+        "        \"D\": np.diag(np.sqrt(np.arange(1, NB_MAX + 1)), k=1),  # b\n",
         "        \"N\": np.diag(np.arange(0, NB_MAX + 1), k=0),           # particle number\n",
         "    }\n",
         "    site_basis.append(basis)\n",
diff --git a/docs/source/user/installation.rst b/docs/source/user/installation.rst
index 4c8c92cd..0f4c662f 100644
--- a/docs/source/user/installation.rst
+++ b/docs/source/user/installation.rst
@@ -23,6 +23,8 @@ One can install ``block2`` using ``pip``:
   If these binaries have some problems, you can use the ``--no-binary`` option of ``pip`` to force building from source
   (for example, ``pip install block2 --no-binary block2``).
 
+* For very new Python versions (3.12) and Windows, the ``--extra-index-url`` option of ``pip`` is required, see below for installing the developement version of ``block2``.
+
 * One should only install one of ``block2`` and ``block2-mpi``. ``block2-mpi`` covers all features in ``block2``,
   but its dependence on mpi library can sometimes be difficult to deal with.
   Some guidance for resolving environment problems can be found in github issue
@@ -33,7 +35,8 @@ One can install ``block2`` using ``pip``:
       pip install block2==<version> --extra-index-url=https://block-hczhai.github.io/block2-preview/pypi/
       pip install block2-mpi==<version> --extra-index-url=https://block-hczhai.github.io/block2-preview/pypi/
 
-  where ``<version>`` can be some development version number like ``0.5.2rc13``. To force reinstalling an updated version, you may consider ``pip`` options ``--upgrade --force-reinstall --no-deps --no-cache-dir``.
+  where ``<version>`` can be some development version number like ``0.5.2rc17`` (see https://github.com/block-hczhai/block2-preview/tags for a complete list of version numbers. The letter ``p`` is not needed).
+  To force reinstalling an updated version, you may consider ``pip`` options ``--upgrade --force-reinstall --no-deps --no-cache-dir``.
 
 Manual Installation
 -------------------