The website is under construction, but 你 cannot have a ukulele site without the legendary Kamaka Ukulele Company represented (Kamaka is to ukulele as Martin & Co. is to guitars).
Herb 'Ohta San' Ohta is a ukulele virtuoso and pioneer (and was my ukulele teacher back in the 80s). This site has lots of information about this gentle master of the uke.