First you need to advance to the Agricultural Age.
Total materials required: 23 Logs, 23 Stone, 10 Copper and 3 Meat.
Crafting will be done from the crafting tab of the character screen.
First you'll want to collect 3 Logs and 3 Stone by punching rocks/trees to craft a Wooden Axe and Stone Pickaxe.
Then you'll collect 10 Logs and 10 Stone to craft the Altar of Civilization.
And finally collect 10 Logs, 10 Stone, 10 Copper and 3 Meat (Raw or Cooked) and interact with the Altar of Civilization and advance to the Agricultural Age.
Now in the Agricultural Age you'll have to craft some new stations to help you advance to the Frontier Age.
Total materials required:
15 Log, 21 Stone and 6 Charcoal.
Using the workbench craft the Blacksmith, Stone Furnace and then convert 6 Log into 6 Charcoal in the Furnace and craft the Cooking Pot.
Total materials required:
20 Wheat (convert to 10 Wheat Flour), 1 Stone, 10 Log and 11 Copper Ore (convert to Copper Ingots)
Harvest 20 Wheat and convert them to 10 Wheat Flour in the cooking pot.
Craft the Detector with 1 Stone and 1 Copper Ingot (smelt 1 copper ore in the furnace).
Craft a Copper Shield at the Blacksmith for 10 Log and 10 Copper Ingot (smelt 10 copper ore in the furnace).