There are filter wrenches available from your local parts store, but I think there is a tendency to over-tighten when using them, so I suggest to just grab it with your hand (when not too hot) and twist on tighter.
Having lived in both the US and Europe, I have seen that the Manufacturers recommended oil and filter change interval seem to be followed in Europe, but generally thought to be too long in the US, where 3000 miles is common. I personally think that it depends on how hard the bike has been ridden and how many on/off cycles. Changing the oil/filter every 3000 miles will not hurt anything (except your wallet).