i just bought a pack of assorted capacitor's and i dont understand the coding. heres some examples 2A154K 224K(K is underlined) 2A333J how do i work these out into uF or pF values ?

The 3 digit number before the K or J is what you need to read. Capacitors (except for electrolytics) are rated in picofarads. The first two digits are the value and the third is the exponent, or power of ten (or number of zeroes). Therefore, a cap marked 224 is 22 x 10^4, or 220000pF, or 220nF, or 0.22uF - take off three zeroes to convert from pF to nF and take off another three to go from nF to uF. The letter denotes the tolerance