diff --git a/BOARD.txt b/BOARD.txt
index 3aedacf..88d587f 100644
--- a/BOARD.txt
+++ b/BOARD.txt
@@ -18,12 +18,21 @@ TODO                                    DONE
                                         open last download
                                         media files
                                         identity management
+                                        logging
 home page
-logging
---------------------------------------------------------------------------------
+
+
+
 BACKLOG
+--------------------------------------------------------------------------------
+bug: can't input unicode
 click on links to open them
-download to disk, not in memory
+bug: can't reload bebop: pages
+bug: exiting editor breaks curses
+dumb rendering mode per site
+disable cache per site
+well, preferences per site maybe?
+download without memory buffer
 download in the background
 download view instead of last download
 does encoding really work? cf. egsam
@@ -36,8 +45,6 @@ bug: combining chars reduce lengths
 non shit command-line
 response code 11 (if still there)
 gopher?
-save history
+opt. maintain history between sessions
 history (forward) (useful?)
-bug: can't reload bebop: pages
-bug: can't input unicode
-bug: astrobotany loops on /app
+search in page (ugh)
diff --git a/bebop/__main__.py b/bebop/__main__.py
index df79420..db3af47 100644
--- a/bebop/__main__.py
+++ b/bebop/__main__.py
@@ -1,4 +1,5 @@
 import argparse
+import logging
 
 from bebop.browser.browser import Browser
 from bebop.config import load_config
@@ -9,8 +10,18 @@ from bebop.tofu import get_cert_stash_path, load_cert_stash, save_cert_stash
 def main():
     argparser = argparse.ArgumentParser()
     argparser.add_argument("url", nargs="?", default=None)
+    argparser.add_argument("-d", "--debug", action="store_true")
     args = argparser.parse_args()
 
+    if args.debug:
+        logging.basicConfig(
+            filename="bebop.log",
+            level=logging.DEBUG,
+            format="%(asctime)s %(levelname)-8s %(message)s"
+        )
+    else:
+        logging.disable()
+
     if args.url:
         start_url = args.url
     else:
@@ -21,7 +32,7 @@ def main():
 
     bebop_files_error = ensure_bebop_files_exist()
     if bebop_files_error:
-        print("Bebop could not create local files:", bebop_files_error)
+        logging.critical(f"Failed to create files: {bebop_files_error}")
         return
 
     cert_stash_path = get_cert_stash_path()
diff --git a/bebop/browser/browser.py b/bebop/browser/browser.py
index beaafd3..87ab523 100644
--- a/bebop/browser/browser.py
+++ b/bebop/browser/browser.py
@@ -3,12 +3,13 @@
 import curses
 import curses.ascii
 import curses.textpad
+import logging
 import os
 import subprocess
 import tempfile
 from math import inf
 from pathlib import Path
-from typing import Optional, Tuple
+from typing import Dict, Optional, Tuple
 
 from bebop.bookmarks import (
     get_bookmarks_path, get_bookmarks_document, save_bookmark
@@ -113,6 +114,7 @@ class Browser:
     def run(self, *args, **kwargs):
         """Use curses' wrapper around _run."""
         os.environ.setdefault("ESCDELAY", "25")
+        logging.info("Cursing…")
         curses.wrapper(self._run, *args, **kwargs)
 
     def _run(self, stdscr, start_url=None):
@@ -259,6 +261,7 @@ class Browser:
     def refresh_status_line(self):
         """Refresh status line contents."""
         text, pair, attributes = self.status_data
+        logging.debug("Status: " + text)
         text = text[:self.w - 1]
         color = curses.color_pair(pair)
         self.status_line.addstr(0, 0, text, color | attributes)
diff --git a/bebop/browser/gemini.py b/bebop/browser/gemini.py
index 59e44b1..5c9c6d6 100644
--- a/bebop/browser/gemini.py
+++ b/bebop/browser/gemini.py
@@ -1,5 +1,6 @@
 """Gemini-related features of the browser."""
 
+import logging
 from pathlib import Path
 from typing import Optional
 
@@ -77,6 +78,10 @@ def open_gemini_url(
         browser.set_status(url)
         return url
 
+    logging.info(
+        f"Request {url}"
+        + (f" using cert and key {cert_and_key}" if cert_and_key else "")
+    )
     req = Request(url, browser.stash, identity=cert_and_key)
     connect_timeout = browser.config["connect_timeout"]
     connected = req.connect(connect_timeout)
@@ -151,6 +156,7 @@ def _handle_response(
     Returns:
     The final URL on success, None otherwise.
     """
+    logging.info(f"Response {response.code} {response.meta}")
     if response.code == 20:
         return _handle_successful_response(browser, response, url)
     elif response.generic_code == 30 and response.meta:
diff --git a/bebop/config.py b/bebop/config.py
index 35a09d6..e18ff00 100644
--- a/bebop/config.py
+++ b/bebop/config.py
@@ -1,6 +1,7 @@
 """Config management."""
 
 import json
+import logging
 import os.path
 
 
@@ -25,9 +26,9 @@ def load_config(config_path):
         with open(config_path, "rt") as config_file:
             config = json.load(config_file)
     except OSError as exc:
-        print(f"Could not read config file {config_path}: {exc}")
+        logging.error(f"Could not read config file {config_path}: {exc}")
     except ValueError as exc:
-        print(f"Could not parse config file {config_path}: {exc}")
+        logging.error(f"Could not parse config file {config_path}: {exc}")
     else:
         # Fill missing values with defaults.
         for key, value in DEFAULT_CONFIG.items():
@@ -42,4 +43,4 @@ def create_default_config(config_path):
         with open(config_path, "wt") as config_file:
             json.dump(DEFAULT_CONFIG, config_file, indent=2)
     except OSError as exc:
-        print(f"Could not create config file {config_path}: {exc}")
+        logging.error(f"Could not create config file {config_path}: {exc}")
diff --git a/bebop/identity.py b/bebop/identity.py
index f4db28b..3d35dad 100644
--- a/bebop/identity.py
+++ b/bebop/identity.py
@@ -24,6 +24,7 @@ The identity file and the identities dict both have the following format:
 
 import hashlib
 import json
+import logging
 import secrets
 import string
 import subprocess
@@ -40,6 +41,7 @@ def load_identities(identities_path: Path) -> Optional[dict]:
         with open(identities_path, "rt") as identities_file:
             identities = json.load(identities_file)
     except (OSError, ValueError) as exc:
+        logging.error(f"Failed to load identities '{identities_path}': {exc}")
         return None
     return identities
 
@@ -50,6 +52,7 @@ def save_identities(identities: dict, identities_path: Path):
         with open(identities_path, "wt") as identities_file:
             json.dump(identities, identities_file)
     except (OSError, ValueError) as exc:
+        logging.error(f"Failed to save identities '{identities_path}': {exc}")
         return False
     return True
 
diff --git a/bebop/tofu.py b/bebop/tofu.py
index c24ed02..55df850 100644
--- a/bebop/tofu.py
+++ b/bebop/tofu.py
@@ -5,6 +5,7 @@ requires more clarity both in specification and in our own implementation.
 """
 
 import hashlib
+import logging
 import re
 from enum import Enum
 from pathlib import Path
@@ -105,7 +106,7 @@ def save_cert_stash(stash: dict, stash_path: Path):
                 entry_line = f"{name} {algo} {fingerprint}\n"
                 stash_file.write(entry_line)
     except (OSError, ValueError) as exc:
-        print(f"Failed to save certificate stash '{stash_path}': {exc}")
+        logging.error(f"Failed to save certificate stash '{stash_path}': {exc}")
 
 
 class CertStatus(Enum):