diff --git a/.gitignore b/.gitignore
index cc68ced..598f998 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,146 @@
-secrets.conf
+# Byte-compiled / optimized / DLL files
+__pycache__/
+*.py[cod]
+*$py.class
+
+# C extensions
+*.so
+
+# Distribution / packaging
+.Python
+build/
+develop-eggs/
+dist/
+downloads/
+eggs/
+.eggs/
+lib/
+lib64/
+parts/
+sdist/
+var/
+wheels/
+share/python-wheels/
+*.egg-info/
+.installed.cfg
+*.egg
+MANIFEST
+
+# PyInstaller
+#  Usually these files are written by a python script from a template
+#  before PyInstaller builds the exe, so as to inject date/other infos into it.
+*.manifest
+
+# Installer logs
+pip-log.txt
+pip-delete-this-directory.txt
+
+# Unit test / coverage reports
+htmlcov/
+.tox/
+.nox/
+.coverage
+.coverage.*
+.cache
+nosetests.xml
+coverage.xml
+*.cover
+*.py,cover
+.hypothesis/
+.pytest_cache/
+cover/
+
+# Translations
+*.mo
+*.pot
+
+# Django stuff:
+*.log
+local_settings.py
+db.sqlite3
+db.sqlite3-journal
+
+# Flask stuff:
+instance/
+.webassets-cache
+
+# Scrapy stuff:
+.scrapy
+
+# Sphinx documentation
+docs/_build/
+
+# PyBuilder
+.pybuilder/
+target/
+
+# Jupyter Notebook
+.ipynb_checkpoints
+
+# IPython
+profile_default/
+ipython_config.py
+
+# pyenv
+#   For a library or package, you might want to ignore these files since the code is
+#   intended to run in multiple environments; otherwise, check them in:
+# .python-version
+
+# pipenv
+#   According to pypa/pipenv#598, it is recommended to include Pipfile.lock in version control.
+#   However, in case of collaboration, if having platform-specific dependencies or dependencies
+#   having no cross-platform support, pipenv may install dependencies that don't work, or not
+#   install all needed dependencies.
+#Pipfile.lock
+
+# PEP 582; used by e.g. github.com/David-OConnor/pyflow
+__pypackages__/
+
+# Celery stuff
+celerybeat-schedule
+celerybeat.pid
+
+# SageMath parsed files
+*.sage.py
+
+# Environments
+.env
+.venv
+env/
+venv/
+ENV/
+env.bak/
+venv.bak/
+
+# Spyder project settings
+.spyderproject
+.spyproject
+
+# Rope project settings
+.ropeproject
+
+# mkdocs documentation
+/site
+
+# mypy
+.mypy_cache/
+.dmypy.json
+dmypy.json
+
+# Pyre type checker
+.pyre/
+
+# pytype static type analyzer
+.pytype/
+
+# Cython debug symbols
+cython_debug/
+
+# mac shenanigan
+.DS_Store
+
+# VS Code files
+.vscode
+
+# project-specific
+secrets.ini
\ No newline at end of file
diff --git a/README.md b/README.md
index 565f3c8..986d929 100644
--- a/README.md
+++ b/README.md
@@ -1,13 +1,13 @@
-# NijiHoloBot
-### A Twitter bot that tweets when a Twitter interaction occurs between Nijisanji EN/ID and hololive EN/ID members.
-...cause some people are that desperate. Like me!
+# NijiHolo_EN_ID_Bot
+### Twitter bot that follows interactions between Nijisanji EN/ID and hololive EN/ID members.
+...because some folks are that desperate. Like me!
 
 ## Roadmap
 * Read past tweets of members from both companies
 * Store tweets in a queue file
 * Create image of tweet, including up to three image attachments from that tweet
 * Combine image(s) with quote retweet
-* Don't tweet already-existing tweets (check quoted RT?)
+* Don't tweet already-existing tweets (check quoted RTs?)
 * Check out new tweets as soon as they post
 
 ## Notes
diff --git a/src/catchup.py b/src/catchup.py
new file mode 100644
index 0000000..e5ad38a
--- /dev/null
+++ b/src/catchup.py
@@ -0,0 +1,6 @@
+## The bot's catch-up mode
+# Scan all accounts for cross-company interactions.
+# Terminates when finished scanning.
+
+def run():
+    pass
\ No newline at end of file
diff --git a/src/listen.py b/src/listen.py
new file mode 100644
index 0000000..8c23122
--- /dev/null
+++ b/src/listen.py
@@ -0,0 +1,2 @@
+## The bot's listen mode
+# Listen for cross-company interactions.
\ No newline at end of file
diff --git a/src/main.py b/src/main.py
index b07ecde..d4cc43d 100644
--- a/src/main.py
+++ b/src/main.py
@@ -1,5 +1,40 @@
+import sys
+import argparse
+from argparse import RawTextHelpFormatter
+import TwitterAPI as api
+import catchup as catchup
+
+HELP_TEXT = \
+'''OPTIONS:
+    -h                  Displays this help text.
+    -c, --catchup       Scan all tweets from all accounts and makes posts all cross-company
+                        interactions found.
+    -l, --listern       Listen for all new tweets from all accounts.
+'''
+
+def init_argparse():
+    p = argparse.ArgumentParser(description='Twitter bot that follows interactions between Nijisanji EN/ID and hololive EN/ID members.', formatter_class=RawTextHelpFormatter)
+    p.add_argument('mode', nargs='?', \
+        help='mode to run the bot at:\n\
+  l,listen:       (default) listen for new tweets from all accounts; will not terminate unless error occurs\n\
+  c,catchup:      scan all tweets from all accounts; will terminate when done')
+    return p
+
 def main():
-    print('hello python android')
+    parser = init_argparse()
+    if len(sys.argv) < 2:
+        parser.print_help()
+        return
+
+    args = parser.parse_args()
+    print(args.mode)
+
+    match args.mode:
+        case 'l' | 'listen':
+            print('LISTEN MODE')
+        case 'c' | 'catchup':
+            print('CATCH-UP MODE')
+    
 
 if __name__ == "__main__":
     main()
diff --git a/src/secrets.py b/src/secrets.py
index 710e704..8c7af91 100644
--- a/src/secrets.py
+++ b/src/secrets.py
@@ -1,3 +1,5 @@
+## Twitter developer credentials management.
+
 import os
 import configparser