Forearm is fine, it s nice place as you can choose to watch or not. Sometimes its good to be able to see whats going on soyou know when the needles hitting and when its abuot to so no nasty surprises.
If you can give birth you can get tattooed no problem.
It frame of mind mostly. If you want the ink you'll sit and sit still.
IF you know youre a bit of a wuss make sure you eat well before you go, plenty of carbs for slow release energy and take some chocolate with you and a drink to keep you going while youre getting inked...low sugar levels is always a recipe for feeling a bit rough during or after.
Obviously thats more important for bigger pieces,if youre under the needles for a couple hours you need a little something to keep you going.
Take a book or an ipod to keep you distracted, or just talk to the artist just keep yourself busy so you dont dwelling the dammit thats sore feeling.
I have all around my forearm done down to the wrist and the outside was less stingy than the inside but none of it was that bed.