I wouldn't worry too much about it. No point in it when what you need to learn about first is the products that your vape shop carries. Find that out and study up on those products. Odds are it's mostly commercial juice, of which there's no point in recommending something you don't sell, pods, and disposables. You are not likely to see much in the way of mods and rebuildables. These don't appeal to the masses, just us hard-core, old school vapers.