I'm sorry if I'm quick and schematic... I'm at work, although I really want to finish, it's finally Friday!
At the moment there will be no separation of paths, no need to save to continue playing different later, although some decisions can lead to different scenes ... I recommend you the most usual, save before making a decision and test what happens in each case
If you haven't played since v0.1 it has a lot to see, and I hope you like it
I recommend you to use the guide for the new content of v0.2, and for the content of v0.2.1 there is no guide but it is more intuitive (and if you look at the previous posts there are some tips).
In Gina's bathroom scene, you have to enter only 1 time without knocking on the door, you will lose points but not many, and from there you will have a new option to spy on her without her seeing you, although you have a limited time, be careful!
The scene of masturbation while doing yoga is random, you have to spy on her and you will end up seeing it.
No, you can't go into Gina's room at night... at the moment