As a brand new seller, it'd be difficult to sell them for a profitable price on eBay as there are many, many competitions. Have you tried using the search function on the top of the screen to see how many books, necklaces, and beads listings there are? Are what you're selling unique enough that would make buyers buy from you instead of from other established sellers who have an actual business plan and have been selling for years?
Same goes for tools, mice and keyboards (try using the search function up top to see if you find the ones you have), as they are expensive to ship so unless it's a very specific brand or very unique and rare, buyers are unlikely to pay $10+ shipping to buy it off you versus from established places like Bestbuy and Amazon, which offers free shipping and free returns.
As for necklaces you made yourself, Esty is probably the better place for them but it costs money to list there. Again, if you were only mildly successful on Facebook, and not so much on Kijiji, then I don't think selling on eBay is quite for you.
The thing with buying local to flip them online, you need to know the shipping cost ahead of time, add that shipping cost to the cost of buying local, to see if it's actual profitable to sell them online. Of course, there are other sellers here who also buy local and sell online for profit, but they know their items very well and they have a solid plan and an established selling status. Acquiring the knowledge you need to be able to sell online, would be what you need to work on.
Keep in mind that you're the one asking for help, we have no obligations to help you, so don't take getting free help on an online forum for granted. You're not helping us by making the info you provide specific; you're helping *yourself*. To further help yourself, step back from the discussion board, do some research and reading as you've already been suggested, and come back to ask questions again after that.
