Re stops, be careful with rules of thumb - the reality is usually somewhat more complicated. Setting automatic stops may be a prudent thing to do for high-volume, mid-to-high cap stocks trading on a major exchange. They are NOT a very good idea for an OB story stock, as they make easy targets for greedy specialists.
IMO, you would be much better off setting mental stops (i.e., just get yourself out if your threshold price is exceeded). The catch is, you must be both disciplined and vigilant for this strategy to work, but IMO it is far better than to give your profit potential away to unscrupulous specialists in the wild, wild world of penny stocks.