How to craft? 
All recipes can be found at the tab "Images" above; 

How to get fossils? 
Fossils must be mined by using a rockpick; 
A fossil block will drop only one (placeable) fossil item; 
Radiometric Dating Instrument can help you locate specific geologic periods; 

How to get DNA? 
Clean your Fossils at a Cleaning Table; 
Extract DNA from your Cleaned Fossils at a DNA Extractor; 
This process will result on DNA Bottles, which are used to research and create animals/plants; 

How to Research an Animal or Plant? 
Every animal and plant must be researched before de-extincting it; 
All research is stored at a DePad;
Place your DNA bottles and DePad into a DNA Decoder and select the respective animal or plant; 
Your research progress is shown at the top of the DNA Decoder screen;
If your research is completed, you can write Data Disks with a default DNA String (AAA) by selecting that research and placing an Empty Data Disks;
This DNA String will determine the variant of your future animal or plant; 
DNA Strings can be modified at a DNA Editor Machine by using more DNA Bottles; 

How to De-Extinct an Animal or Plant? 
To de-extinct an animal or plant, you have to place the written data disk into the De-Extinction Machine; 
This process will require a container for that DNA, e.g. a chicken egg, an empty syringe, flower (Banksia) or fern (Lygodium); 
Then, enjoy the power of genetics!