I recently purchased Piosolver, and I'm wondering if anyone can give me advice on how to best use the software to improve my game?

1) Right now, I'm planning to start with the 25 flop subset found here:

https://www.piosolver.com/blogs/news/62725637-choosing-a-subset-of-flops-to-represent-the-whole-game

Is this a good way to start?

2) I'm wondering what basic settings I should be using when building trees? For example, what bet sizes would you recommend on various streets, and what hand ranges should I be focusing on?

Right now, I was thinking about keeping it simple with something like:

a) Tight range in position vs tight range out of position

b) Tight range in position vs loose range out of position

c) Loose range in position vs tight range out of position

d) Loose range in position vs loose range out of position

Is this a good idea, or should I consider something different?

3) I'm wondering what my "big picture" observations should be for each tree. For example, what type of patterns/ observations would you recommend writing down... And how do I simplify all of this complex data into something I can realistically start memorizing?

I apologize if these questions have been asked before... I basically just need a simple post explaining "Piosolver for dummies."