JUst dive in and get your feet wet.It will take some getting used to the different things you will need,some can be made like sleeves for a pen mill.
COntray to another post in this thread CA glue from wall mart is the most expensive way to buy CA and you have no idea how old it is.
Rather than starting wih slimines peruse a catologue and select a style you would consider starting out with and then ask the degree of difficulty.
Slim lines are great pens but eventually you will tire of them and want to"improve them with the tell tale "I am bored with this shape" corset waist pens.
Multiple speed lathe is the best way to go.
If the Jet VS withthe indexer is still on sale for $300.00 at WC I would say jump on it other waise look at a the manual Jet mini and the Rikon.
I have both.
For ease of changing speeds manually I would select the Rikon for ease.
It was a larger swing and bigger capacity than the original Jet mini.
There are a lot of great suppliers on line but you are going to have a lot of questions.
I would start asking them when you go topurchase the lathe.
Both Klingspoor and Woodcraft have lathes and salespeople who turn pens.
Unlike me they will be willing to share their secrets.
Eventually you will realize to be patient and order online things like micrmesh and CA along with kits rather than paying high prices at brick and mortar stores.
For entry level kits(and others) I reccomend WoodturninZ.(Tell them Eagle sent you.
YOu will want to experiment with different finishes.Everyone tries Krystal Koat because the claims are good, it just doesn't last or take abuse.It is instant but not long lasting gratification.
As far as wanting to turn other things, that is not true for me.
I have enough problems getting this pen thing down on a consistant basis.
In one month from now it will be 3 years that I have been making pens.