Rotary cutter, rulers, mat. Basting spray (love the 505 brand), quilting gloves (I prefer Machingers - lighter weight, better fitting). Scissors, Seam Ripper. Those are my basics. As far as rulers go, you can get 1-2 to start, then add as you need them. Depending on what you plan to make, probably the most practical are rectangle 6x18 or 6x24, and 12-1/2 square.