Hi Bunnyrawr - do you mean best physical place to go - ie a store? What country are you in - unless you are in UK, not sure I can help much - I always give same advice to people though - if you dont have a good uke dealer (who specialises in ukes) near you who can advise, then go online, but order from a specialist you can speak on the phone or email to - not a bulk music shop who just ship them out.
If you mean places on the web to find out about ukes - well, this place is my favourite, but also Ukulele Hunt and of course
www.gotaukulele.com!