Very cool to see a few folks find this thread already.
It's an amazing instrument. I can't do much yet, but - I'm hooked.
I'm finding a group online - Facebook - to be a bit snobby for my tastes. Thus why I thought I'd stoke a more friendly dialog here.
For anyone who finds this thread, had some desire, and is deathly concerned about standard notation, this book has both standard and tab at the same time:
https://www.amazon.com/How-Play-Cello-Days-Beginners/dp/B0B92FYFJG
Ignore the 14 Days bit. It's there just to fit in with a bunch of other books in the same set.
Cross out the Days and write in - Years.

But seriously, it Is a solid starter book. You can learn standard notation if you choose, but in the meantime, there is tab there to move you along.
If this thread thrives, I will share here exercises I write out as I try to learn.
One thing I find - existing material doesn't invest a whole lot of energy in engaging new learners with fresh material. Thus, most books are gonna have - Twinkle Twinkle.
Will post Another One Bites The Dust and Owner Of A Lonely Heart exercises for learning first position.