Mars Arka

Hi everyone! I want to get more into Lego, building my own little towns and villages, which is kind of a childhood dream of mine. I haven't decided on a clear direction in terms of theme yet, but I'm leading towards Creator/City or medieval, and I basically want to get my feet wet. Now the thing is, I barely have any sets that I would feel comfortable taking apart to use, so my question then is, how best to go about procuring a variety of parts? One recommendation I've seen, is going to Lego stores, but there aren't any near me, though I could order parts on the Lego website and BrickLink. However, if you're just starting out, you kind of need/want... everything. Bricks, plates, slopes, plants, etc, all in varying colors, sizes, and quantities, which might become pretty expensive if you want to get a decent collection to choose from. However, not being a big fan of second-hand, the only other option would be sets I suppose, which aren't cheap either, of course, and might come with a lot of parts I might never use. An advantage I see which sets however, is that I assume, that reselling them would be easier, should I decide to stop this new hobby in a few years. I doubt that I would easily get my money back selling loose, used parts in bulk on eBay, but if I use a set's parts in a display model of mine and later recreate the original set to sell it, I'm hoping I'd be able to at least make back a decent chunk of my investment, if not even make profit, should I have picked up something that became rare. One set I'm eyeing for example, is the Ninjago City Gardens (71741), which I could buy for ~285€ around these parts right now. That would give me ~5700 parts to work with, in various configurations, for a price per piece of about 0.05€. And were I to sell the figures, the PPP would lower to about 0.03€, based on my research. It seems to me like it rarely gets much cheaper than that, and I feel like this approach, supplementing it with buying specific parts off Lego/BrickLink, could hopefuly give me a base to work with. But again, there's tons of parts in there that I will presumably never use, and I'm not a fan of Ninjago or anything either. To summarize, ideally I want to get new parts to start my adventure with, with a nice variety, that I can also easily sell again, should that wish actually arise. With my thoughts layed out, can anyone give me some advice or share their experience? Is it better to buy specific parts for the initial part collection, or to use sets and live with not using all the parts? Can you easily sell parts in bulk without losing a lot of money? And if sets are the way to go, do you have suggestions for ones that would work well as a general base to use for a variety of purposes? I get that this is Lego of course, and using stones for anything is kind of the point, but I mean, like, a ton of Lavender bricks won't help me build a medieval world, whereas gray, green, black, white, etc, can basically be used anywhere. You know what I mean I'm sure :P I'd appreciate any tips.