When I first was getting started, I mainly used the Encanto database and various threads here on F4F and Gardenweb. Now there's also Ourfigs.com which seems to be somewhat monitored by the users. I based most of my searches on a particular variety's resistance to my area's typical inclement weather. I mean... duh, but that's really it.
Websites for extension offices or university websites (e.g. for me, it's UF and Purdue) offer good advice and suggest some varieties.
I have to say that I've read a bit of misinformation on a few nursery websites. For example, some have stated that certain varieties require at least 100 chill hours when they don't; they perform just fine with 0-50 chill hours. Others sell supposedly new varieties about which I couldn't find any info anywhere else online. Just something to think about while researching.
Avoid TyTy and its billion other websites that operate under different company names.
Also, there are many cases where a single variety has multiple names so be careful before you sign yourself up for a Stella, a Dalmatie, and a Belleclare's Vasilika Sika. Don't be swept up by exotic sounding names - Dotatto is just the Italian name for Kadota (Kadota is a great fig but you really only need one.) Same with Vista, Violette de Bordeaux, Negronne, etc. The list goes on and on.
However, I think the Vista/VdB one is a case of a variety having different strains, if I'm not mistaken. Still, some of the more experienced people on these forums maintain that the particular strain of a variety is far less important than the climate and growing practices.
Good luck!