Your BnB, you're gift from God, and you're savior is the 2,1,F+2 string. It's safe on block and if it hits you can follow it up with 4,4 and a Shadow Kick or Flip Kick. The next best string is F+3,3,Back+3. You can either follow through completely with it, or if the first initial hits land end it with a nut punch. For juggles use 1,1, 1,1, 4,4 Nut Punch. It's not the most damaging but it leaves you with a stunned opponent right in front of you. I usually follow a Nut Punch with either a sweep, F+4, or 2,1 to grab.
Hope I helped a bit. Let me know if you have anymore questions.