At work, I have a set of long-term goals I'm supposed to be making progress on over the year. As a way to remind myself about them, I have a cron job setup to open the URL with the goals on them every morning.
First, you need to create a bash script to open a webpage. Note that I'm setting the display so that when cron runs the job behind the scenes, it knows which display to use. I'm also using xdg-open, which will open a URL (or any document) in the currently registered application. In my case, that's Chrome.
#!/bin/bash export DISPLAY=:0 xdg-open https://docs.google.com/document/d/some_document_id
I saved this as ~/bin/outcomes.sh. Next, you need to make it executable.
chmod +x ~/bin/outcomes.sh
Finally, you need to schedule it in cron. Here is the syntax for running it every morning at 8AM.
>crontab -e * 8 * * * /home/chase/bin/outcomes.sh