1. How do I trigger Automatic Mode without a mouse wheel? I'm on a laptop.
Uhh... you're kinda SOL on that one, I don't think you can rebind keybinds here.
2. The girl's shirt. Can you remove it completely or not?
You kind of can (if you click BONUS when it becomes available - after she cums once- and then BACK, she's completely naked).
3. How on Earth do I activate the other actions the hand and the mushroom have? I have been playing this for over an hour, and I have no clue what I'm doing wrong.
You gotta... drumroll... scroll down to switch options. Yes, you are kind of fucked.
EDIT: This is probably gonna get buried, but here's a quick FAQ/hints:
Much of what you can and can't do in the game (strip her skirt/panties/socks, finger her ass, lick her foot, stick your dick in her sock) relies on getting her legs to a specific position. Trouble is, these positions are only achievable by moving from one to the other (so for legs straight down you need to get her with both legs straight up, etc) and you have to use one or two very annoying and hard to find interaction points on her legs. Which, of course, move around each position. They aren't all available in every position but they are roughly around her thighs (next to the rubbing icon, usually), her knee, behind her shin and around her calf. Also, even if you find the interaction point AND you drag towards the right direction, sometimes it will take multiple tries to get the position you want; I suspect that's because the invisible "goal" interaction points (where you need your mouse to end up while dragging) are as finicky as the "start" points.
Here's a non-exhaustive list of positions and how to get them:
From her starting position (right leg straight, left leg bent- note that this is the opposite of how you see them on the screen):
-Touch around the right side of her waist (left as you see it) to remove her skirt (one of the most obnoxious garments in history)
-Touch near her pussy to slide her panties aside.
-From starting position)Right leg, just under the hem of her kneesock: pull right to completely straighten it or left to bring it to an M position.
Right leg, from M position: touch her shin and drag down for Right Leg Off Couch position. Touch her thigh to the right of her knee to bring it back up.
Right leg, from M position: touch her knee and drag up to bring it to right leg foot raised position (sadly, you cannot lick it).
From right leg foot raised position, touch around her calf and drag left for Right Leg Extended position. Touch around her thigh and drag right to bring it back to M position.
-Left leg, on her knee: pull right to bring it to the M position.
Left leg, from the M position: touch on her thigh just under her knee crack and drag left to bring her to foot raised position (foot licking and sock dicking happen here).
EDIT: It seems to be possible to use the same touchpoint to drag her leg from left leg M position to left leg lowered, however I only managed to do it once so I can't give reliable instructions as to how. Possible that there are multiple very close or even overlapping interaction points there.
-Left leg, from foot raised position: touch the thigh (just under the knee) to bring it back down to M position, or near the calf to bring it to extended over her head position.
-Left leg, from M position: touch just above her calf near her shin and drag up for Foot on Couch position.
-Left leg, from Foot on Couch position: touch her shin and drag down to bring it back down to M position or touch her thigh just left of the knee and drag left for Both Legs Raised position (you may have to straighten her right leg for this to work). From this position you can slip off her panties, although the touch spot is tricky- it's on the leftmost side of her butt (rightmost to you) practically on the couch. Also, you need to drag towards her (left) instead of away (right) for some dumb reason. You can also slip off or on her kneesocks (though you can do that from other positions as well) and her pantyhose (for which you need to click on her thighs directly above her pussy).
-According to the dev video from this position you should be able to switch to both legs down, but I admit I haven't been able to achieve that yet. The only interaction points I've found are on both her legs just under her knee pits, with the left leg one returning them to their previous position and the right leg one not doing anything I could find.
-Regarding the sex: You CAN penetrate her (both awake and asleep) but you need to 'prepare' her pussy first by using your dick on first mode on her pussy. Her arousal meter, orgasms, fingers, tongue, etc so far don't matter; you just have to use mode 1 with your dick to open it and then mode 3 to penetrate. Note that if you take too long to find the hotspot the opening will close and you'll have to use mode 1 again.
You CAN finger her in the ass, the hotspot is just a bit lower than her actual asshole.
When she's wearing the pantyhose, you can click on its seam to rip a hole around her pussy.