I've read that a 15pt Disston backsaw or gents saw works great.
I've read a few of the people generally thought of as experts along with a slew of the self appointed ones, and paid close attention to some of them while they did what they do and talked you through it.
My take away on the tooling is that you can get away with very little if you want to but it seems that there are as many ideas about what ya gotta have as there are people talking about it.
I wanted a 20 TPI saw. Something got under my skin that this was the mandatory TPI. I forget what convinced me of this.
I was hell bent to have one, but was dammed if I was going to pay the price for a decent one.
So I set about learning to file the saw by hand. That didn't work out as I hoped. SoooOOooOOoo
I made a machine that guides a file up and down in a reciprocating track with a little X - Y table to hold the blade and guide it into the file. My cross slide lead screw was 1/4-20 Allthread so I have a one turn = one tooth feed. I can swap out the lead screw for other pitches.
Then I got myself a little Saw Set.
I used large Sheet Rock Mud spreaders for the blades. Sawed 'em to the width with an abrasive blade and a water jet coolant.
Uses JB WELD and two pieces of Brass to make the backs
Made my handles. I had to figure out what "hang" is. Make the handle wrong and the blade jams up tighter than you can imagine on the push stroke Yah, I made a handle wrong before I knew there was such a thing as "hang."
Now I have a sweet cutting 20 TPI rip tooth DT saw and I'm dammed if I can tell the difference between that and a 15 TPI with a cross cut tooth by looking at the cut.