Yep, Silken, Nat, & HighSeas have given u great info!
All I have to add, is that I have witnessed firsthand that Catts r tough! I received a Catt in the mail (a 2nd freebie), and it had lost its roots... that was 6-7months ago. Now, it has 3 new leads (it had rotted into two pieces ~4 PB's
so, apparently, twice the leads) and TONS of new roots. Yours prob shouldn't take as long (hopefully) b/c it's growing season... I got mine in the fall, so I had to wait. Good Luck! Also, don't keep him too moist.