If your not willing to pay a sh@tload of money for a basic set of chisels just for a simple one time use, you can go to Harbor freight and by a cheap set for about $40 and go from there. I know most tool suppliers are alot more. The only drawback is they need to be sharpened more often, as they're not a high quality of steel, but it get's your feet wet, and if you decide you like it, then you can get a better set afterwards. If you decide that it's not something you like, your not out $150.
Depending on the type of wood you bought, it may not be an easy task to turn with ordinary tools. I would do some googling to see the workability of the wood you have as some will require carbide tipped chisels to be effective and safe. I gave some purpleheart to my dad, who has worked with alot of woods, but not anything like purpleheart. I told him to knock off the edges and be very careful, and the first try, he didn't knock off the edges, and sent the chisel flying across the room as soon as he touched the chisel to the piece.
Dave