I have read some of this thread. You all are amazing quilters!
I am going to be starting my very first quilt ever soon. I have a few things to get out of the way first.
Any tips for a first timer?
This is one of the quilts I want to make.
Congrats on joining the addiction!

That is a very pretty quilt and a great one to start with.
My tips
....Practice on being consistent with your seams.
....Read (or watch) the pattern until it make sense.
....Measure 3x, cut once.
....Press well.
....If you pre-wash one fabric for a quilt, wash them all. (I only pre-wash flannel if I use it in a backing, but it's a personal preference.) I would never pre-wash precuts.
....Most of all, relax and enjoy!