have done a far bit of soldering myself including SMD stuff, the advice i would give is use a low wattage iron (or even better a temp controlled iron).
Make sure you have a small tip, that what your working on is secure and wont move, have plenty of light and use narrow (.5 or .75mm) lead solder. Using lead-free solder without a temp controlled iron for a beginner will only end in tears.
Copper-cored iron-clad tips can be filed down to make them smaller, but the flux will eat away at the copper very quickly, it will work but dont expect the tip to last long so just see it as a disposable item in this case. The best way really is to buy the right tip in the first place.