Metal detecting

I live in Finland, Tampere. Im just thinking is it wise to get a coin detector? Is it possible to find for example civil war items? Probably the largest battle in the civil war was fought in this city.

I do a bit of metal detecting, here's what I learned so far:
1) Check your local laws and make sure you're not braking any, some countries have strict laws prohibiting metal detecting while others don't have any, most are in the middle.
2) Unless you wanna spend your days digging up trash (bottle caps, soda cans etc) get a good detector, anything cheaper than a Garrett 250 is a waste of money and those aren't cheap so make sure this is a hobby you wanna pursue.
3) Be patient and take your time to learn your detector, it might seem simple at first glance but metal detecting actually requires a lot of experience and knowledge to be done right. You'll most likely spend hours if not days without finding anything even in an area with rich history, there aren't treasures buried at every corner and finding something interesting can take a very long time.
4) Don't expect to get rich off of it, if you make back the money you spent on a detector within a year or two consider yourself very lucky. Sure, some people had very valuable finds but chances of that happening are the same as winning the lottery.

The cool part is when you actually do find something and add it to your collection knowing you're the first person to touch the coin after centuries.

Take a look at Aarremaanalla.com Finnish metal detecting forum, it's full of good information about local circumstances.

I'll probably just stick to numismatics, and not start another new hobby.