Valuations?

Where is the best place to get online coin valuations for the ordinary, non expert, man in the street?
Have a number of coins rescued from a house clearance.  They are mainly British with a few foreign ones thrown in (including a 1943 WWII Ten Pfennig coin with swastika).

Any help appreciated

here  

http://www.ngccoin.com/price-guide/world/

If it is about regular stuff, try these:
NGC for World Coins *)
NGC for US Coins

The only thing you need to know is something about grading. VF = normal circulated grade, one down: F is visible wear on higher surfaces, one up: XF has some of the original lustre retained. Proof is a different type of sport.

NGC is not always perfect. But it's fair in general.

*) Just type in country, denomination and year and see what you get.