Sometimes your favorite pen mysteriously falls apart and you're left with some springs and little things. Here is a guide in case those pieces just aren't fitting together quite right.
Step 1: Finding the Parts
Feel annoyed that your pen came apart and hope all the parts are there. Collect the parts.
Step 2: Spring on the Ink Tube
Got all the parts? Great. First put the spring on the ink tube.
Step 3: Plastic Thing in Pen Tube
Drop the white tube thing (this part most likely has a scientific name, but referring by it probably wouldn't help) into the large pen tube. Make sure it's small side is toward the clicker side.
Step 4: Tube in Tube
Drop the ink tube (with spring still on) into the big pen tube. The unnamed plastic part from before should be nestled into the end of the pen tube before inserting the ink tube.
Step 6: Screw on and Write
Finally, screw on the cap. Hopefully you have managed to scrounge up all the parts and when you click the end, the pen tip comes out and you can write that first novel.