Beginner Tips

Money

 * Jealous Wife assist in the murder route allows you to ask for a car in the end and get the ring as a bonus. That's 4.6k for the car and 1.5k for the ring
 * Sleeping Beauty will give you Wade's buisness card item, allowing you to hand select girls over to him for nice cash boni. Of particular note is the motel girl if you have sex level 7 as it will give you 5k immediately and the option to get another 5k the next day.

Useful Items

 * Woman bathed in red-blue glare: you can get lockpicks, gun and drugs in the trailer

Experience

 * little troublemaker: can trade drugs for harem with 2 girls, can spend stamina each night on fucking them for sexXP and either hypno(brothel/harem) or brutal (slaves)
 * sister of many: lockpick allows rape of sisters you didn't seduce and hypno 4 allows seducing the mother for a total of 5 impregnations to boost incubus level
 * whorehouse: needs ov:x or gun to stop birthcontrol system. Use gun on receptionist or ov:x on room north of her then fuck the whores. Using the gun gives you 1 more whore for a total of 5 impregnations - be aware you need some money for each whore unless you meet some special conditions different for each whore.
 * unfortunate souls: needs brutal level 3 to get in - incubus 4 works too but leaves you with not enough time to fuck everything. You can find 3 rapes (1 of which needs lockpick) and 2 seductions (1 needs lockpick) as well as ov:x and you can revisit the westernmost slave after fucking to decide to take her along. She is a useful item you can also sell for 2.1k.
 * woman down on her luck: with drugs allows 3 impregs

Useful early Start
Brothel Owner start (5 whores and 1k cash) unlock with no starting bonuses:
 * 1) Jealous Wife - assist in murder, get the car
 * 2) Sell car + ring, buy ov:x ( even got enough spare to buy wapal indulgence if you haven't got it yet )
 * 3) whorehouse - go north and replace canister with ov:x, do a circle fucking all 3 whores without bribing them, then ask receptionist name and offer her all your money to fuck her
 * 4) rest until season end