This image show each component you can create or evolve.

Small info if you don't checked the tutorial ingame :

The heart is your central point, if you lose it it's game over. Also, he supply blood.
The muscle is a source of power for every other component.
The bone, the rib cage and the mouth are your defensive component.
The stomach is an additional blood supplier.
The lung is a blood collector, usefull if you don't want to collect blood by yourself.
The sleep face is a slow motion component.
The breast is a kind of decoy. (and this is weird, because we are not attacked by pervert, but by plague-wearer-insect)
The hand is a universal receipter. No other effect i think.
The eye is usefull if you want to see something during night cycle.
The Bee is special, it call a friendly insect who will try to reach your hearth to give you a mission. Mission rewarded if you complete it. Some Friendly (ant or bee) insect also come without calling them.

If you are godlike in terms of micro-management, sleep face and lung will have no use for you.

Also, each component have a amount of input and output slot.
There is a vein component you can draw between component. Unidirectionnal (they come from an output slot to an input slot), but crossable.
Also, each component have a red lifebar and a blue powerbar.

That's it.

Section to improve/complete...

Non-exhaustive list : the bugs (trash mob, easy to manage), the night (everything dark, trust your organism or use eye), The time (yeah, the game don't wait you) there is also on Day 2 a kind of worm moving randomly, not attacking directly, but leaving in his path a kind of acid trail.. not sure yet how to manage this little enemy..

Section to improve/complete...

When a ant/bee reach your hearth, you receive a mission, and once you complete it, you get a reward/bonus.

Non-exhaustive list : There is a heal bonus to add life to an injured component, i think there is a bonus to add a slot to a component (can maybe is usefull for super combo with slot-limited component), there is other bonus i didn't figuret yet what was the effect or how to use it.

Since muscle have 2 output slot, you can easily make an autonomous blood collector machine.

This is also a blood collector machine, with better efficiency. This is because the link stomach->muscle share the effect of the stomach to the muscle (so the muscle produce blood too).

The tutorial teach you to counter the night with a simple hand-eye machine. This system here is better because the eye have to be powered to be more efficient and despite a muscle is more expensive than a hand, the muscle can be replaced somewhere else when night is completed.

Note : This is because you cannot "sell" a component built and there is a limit of component (12 i think)

Not sure if it's a bug or a rare combo, but if you power a mouth and attach it to a powered bone, the bone receive an wider defensive wall.

And finally, a bunker combo, if you altern muscle-mouth, you can create a very fortifed area. The main issue is that each muscle will need another muscle to power this combo and maintain the wall.

At the moment, i just made one game and completed Day 1. I didn't retried yet for better score but i was trying lot of stuff in the sandbox mode (to discover combo).

So yeah i don't have a complete experience of the game and you should probably find some tips or combo i don't know. Feel free to share and i will complete this with great pleasure.