To get started, making a flint knife is recommended. First start by finding gravel and break it till you get at least 1 flint. Next, get a stick (you can get these from breaking dead bushes, breakings leaves, or even crafting them via saplings). Finally, find an oak tree and break it's leaves until you get at least 1 piece of string (you can also kill pigs for pig tails (used as string) or get sea rope (used as string) from seagrass).
Crafting a Wrapped Stick (Use the exact count specified and put them in the correct slots):
-Stick [Mainhand, Count=1]
-String [Offhand, Count=1]
Now that you have a Flint Knife look around for some short grass and break it until you get 6 pieces of short grass (without your Flint Knife the grass wouldn't have dropped).
Follow this recipe and do it 3 times:
⬛🍃 -🍃=Short Grass
🍃⬛ -⬛=Empty
Now dig into the ground and break enough dirt [not grass] to get you at least 6 hard rocks, now follow each recipe (this is called 'Inventory Knapping'):
🪨 -Two stones on diagonal to each other.
🪨
🪨🪨 -Two stones next to each other.
🪨 -Two stones on top of each other.
🪨
Next get 3 sticks and make 3 Wrapped Sticks with the string and the sticks.
For each axe head follow this Hand-Crafting recipe.
Crafting Rock Tools (Use the exact count specified and put them in the correct slots):
-Wrapped Stick(vhauled) [Mainhand, Count=1]
-Each Rock Tool Head [Offhand, Count=1]
CONGRATULATIONS YOU GOT A FLINT KNIFE AND ALL THE ROCK TOOLS!