Hearing that makes me a little bit afraid to keep it or carry it! I know they say after awhile it obtains a beautiful patina. Hopefully, I can make it through the scratches phase! Let me know how it works on that Camel one!
Don't be afraid to use your beautiful new bag! There are products you can use to help PREVENT scratching, but on unfinished leather it is inevitable. Nevertheless, don't freak yourself out, as most may be surface ones you can rub out with a balm, like Cadillac, or "Apple Leather Care" (referred to below ), or "Colonil" is another product many people use here. Your local shoe/acessory shop may recommend a good product, and I will post about suede later in the week. Remember, it's not china, it is leather, so it is durable enought to USE! Way too pretty to keep boxed up!
Can someone please advise how to take care of the handles or straps parts?
Bags will usually get abrasion easily at these places and the leather will discolour or be rough/flake off...
I'm thinking of waterproofing my black nano to prevent this... Will it work?
IDK if waterproofing helps with that particular issue, but using a conditioner might. Those listed above (Apple, Cadillac, Colonil) have been said to work GREAT for preventative care. Waterproofing is a good idea also, yet for the strap in particular, conditioning is probably going to help prevent any kind of deteroriation, if any. I don't think that is as big of a problem with Celines as, for ex, Bal bags or PS1 bags. However, it could be that these bags are so new we just do not know yet.