It starts with the paper (not the pen).

You can start out with a 36 lb. laser jet paper.  This kind of paper is not ideal, but you are going to be throwing a lot of it away.  You can buy a ream for about $15.  It is the absolute lowest grade of paper I would use.  It’s made from wood pulp.  HP, or Hammermill would both be fine.

100% cotton rag papers are much better.  You are looking for hot press paper with a smooth finish.  It can be any weight; the important thing is the finish.  There is smooth finish cold press paper, but you will find it has more texture than the hot press.  This is a problem because your nib will pick up more fibers from the cold press paper.  

Some preferred types of paper are Layout paper, Bristol board (vellum finish is medium texture, plate finish is smooth), and Japan paper.  Bristol board is not universally 100% cotton.  It comes in a range of quality; the expensive stuff like the Strathmore 500 is 100% cotton.  Paris paper is similar to Bristol board but more flexible, and illustration board is more rigid.  Here is a list of papers I’ve used that I like:  Borden and Riley Marker Layout, Canson Pro Marker Layout, Bienfang Graphics 360, Clairfontaine Triomphe Stationery, Clairfontaine Japon Papier, Clairfontaine spiral lined notebook paper, Rhodia spiral lined notebook paper.  If you can find it Mnemosyne spiral graph notebooks are amazing as well.