Collect 1000/3000 Red points
Tech Points are your skill-purchasing currency. They come in 3 different color flavors, Red, Green, and Blue.
Red tech points are earned from physical activities and crafting, and studying physical-related items at the study desk.
This means doing things like breaking rocks, chopping trees, mining materials, and crafting most items at stone/woodworking crafting tables. Some items may give more red points than others. Some activities will also award green or blue tech points as well.
In addition to those physical activities, you’ll also find that you can easily earn red tech points by studying items. When you hover over an item in your inventory or storage, unstudied items will show colored point icons. Any items that show Red tech point icons can be studied for an easy red point payout.
Earning these achievements for the Red tech points (1000 and 3000 points collected) is very easy, and you shouldn’t worry about completing it. It’ll come very naturally over your gameplay (ESPECIALLY if you are striving to complete the game’s many other achievements - there’s a LOT to do in this game). It will likely be the first point-related achievement(s) you earn.