It's easy. See the Harbormaster in Qeynos Harbor, the ticket to TS costs 60s. Take the Journey By Sea bell. You'll end up on the TS docks, walk to the end of the dock (There's another harbormaster who will tell you where the boat is atm) and wait. Get on the boat when it shows up, ride it right to the BM dock. Zero agro.
If you're on a budget, taking the carpet is free :)
I can't recall the expense; the training is free, the four Arts have a small expense, as do the regular enigma books. It wasn't horribly expensive.
Edited, Sep 28th 2007 2:02pm by Calthine