It's THE way to describe, design, challenge, invent, and pivot your business model and it's taught in all the best Business Schools and Universities.
While it's an invaluable tool, you'll get more benefit with some help and support.
I have been using, advising and coaching start-ups in LEAN Startup for 5 years.
Yes. It's the one that you can find online. Some of the boxes are easy to understand and fill-in. Some are much harder to figure out, this is where I can add value.
I started out using the BMC without a coach or mentor and got immediate value. But remember, you can write anything in the boxes and fill-up the Canvas. Job done! Unless you care about whether your business model will actually work. That's where a 3rd party adds tremendous value.