I dont know many retailers accepting bitcoin and the few that do, I wonder if the keep btc on the books or convert it to cash at the time of purchase.

Check out other online guides available here: https://www.biggerpockets.com/guides3.

Check the in person events and meetups in your local area, our online community is full of knowledge and folks willing to share and still nothing replaces the opportunity to interact IRL, you never know who you will meet and where that can take you on your REI journey.

Given my tech and data background, I'm considering developing an online app specifically for Canadian investors.I'm envisioning an interactive dashboard that integrates economic data, sales figures, bylaws, and rental information, complete with prediction models.

Network: Local meetups or online groups (like BiggerPockets)Check out financing options: traditional, creative, or raise capital.Look at properties in your area to understand the market.Let's connect!

Check out other online guides available here: https://www.biggerpockets.com/guides3.

Also, connect with other like-minded people in your community and attend as many in person (and online) meetings at your local REIA groups to network and connect + find out about off market deals and get on local wholesalers "buyers lists".Best of luck!

Is there an online calculator for this?

Suitable investments don't last long, whether in the wholesale or retail market. 

I believe QB Online does this too but most clients still use MileIQ.