A:AnswerYes, just check before you buy if the device is compatible with Google Home. Most manufacturers will proudly state that in the product description :)
A:AnswerYes you can buy and add another bulb. I think it shows one bulb because that's all you get with starter kit. Best buy sells 2-pack and 4-pack of same brand c life bulbs
A:AnswerThe google nest mini is the second generation. Google home being the first generation. Both items are practically the same except for minor interface changes.
Google simply rebranded its “Home” suite of products to “Nest”.
A:AnswerIt may not be linked, not sure how/why. You can try resetting bulb and relinking again. The steps to reset a smart bulb is on manufacturers website