You shouldn't need a walkthrough. At the very beginning, you need to choose good places to hide things like guns. After that, gameplay become fairly easy and consistent.
You have two devices in the upper right of your UI. The first (left, smaller) one of those is your PDA, which shows you all of your current objectives. Things you've completed have a checkmark, and things that are new with the release have a
NEW label by them. It's really easy to follow.
The right of the two devices in the top right of your UI is your phone. Use it to access the security cams (if you've installed them), your messages (under "Chat" at the top), and the list of characters you know (mostly women, with a couple of men). Just increase their love, lust, and corruption as you desire when you have an opportunity.
At any location, click the
Go To... button to see your map; click a location to go there. Depending on how far along in the game you are (and how far away the location is), you can either walk, take the bus (where you
might have an encounter with one of the women), or take a taxi (driven by one of the first women you meet).
Before bed each night, stop by the store (choose "Home" from the map and then there's a button for the store) to get milk. It will help the MC avoid too many nightmares. Other than that, just keep track yourself of what options you've already chosen (different sexual acts or positions, for instance), and everything should either automatically happen or be very clear.