When you were a little kid, you loved to build with blocks, play in the sandbox, and jump in the mud puddles....
...now we're called adults, and it can still be fun!
( the other hard part is the insomnia from the excitement, again just like a kid on Christmas eve )
XJ
PS, I believe that masonry is not an exact science, but that it is relatively simple if you follow basic guidance and there's plenty of that discussed on FB's forum. The advantage here is it's focus on Wood Fired Ovens.