Forum Discussion
Build up a sample portfolio
Decide upon a few datasets and different types of reports that might be valuable in your industry, or pick from a variety of datasets from Makeover Monday if the data isn't targeted to an industry (http://makeovermonday.co.uk/data/). If you participate in Makeover Monday for only a few weeks, you'll build up a portfolio and learn a lot about how you and others can design and improve data visualizations.
It's okay to post on the Data Stories Gallery here on the Community site, but it's not good for a portfolio view since you cannot search for an author and get all the reports published for that author. In my case, I have my own website, where I embed "Publish to Web" reports on sample pages: https://dataveld.com/power-bi-samples/
The Website embedding is a good idea, but what if when you leave that job they delete your reports. What would be the best way to completly duplicate your reports and send/ share with yourself (outside of your organization). And yes, my boss said I can copy everything if I wish. That I would just change any identifying information and he would approve it.
If you can afford a cheap domain (that could also double for use with a personal branding site), signup with Power BI Free and publish portfolio reports from your own tenant instead of your current org's tenant.