Welcome to the crazy yet fun world of ecommerce! It would be great to see a picture of you, if you have a chance to upload one!
Building upon what fudjj said, the great thing about dropshipping is that it's usually the norm to order one product at a time, as you sell each one. Dropshipping is definitely the best way to go if you have either limited funds and/or storage space, or if you don't want to have to package and ship products yourself.
Most suppliers will have it clearly indicated on their websites whether they're just wholesalers, or if they also dropship, and if all else fails, ask them!
As far as your concerns about quality, the great thing about Salehoo is that almost every supplier has reviews and ratings posted on their profiles, where you can see what people who have already bought products from them have to say regarding the quality of products they have to offer.
Best of luck to you!