if you are thinking of making them for gifts for family/friends, out our way is Woodworkers Warehouse Supply.
every so often they hold classes (free) on a Saturday and just before Christmas, they had a class on making pens.
they also have classes on band saws, routers, drill press use and other tools that they sell.
yes, they sell pen making tools and supplies.
you may want to check out that idea, and observing and asking questions at a class, you would have a better idea if that hobby
is for you.
just my 2 cents worth.