If you see a domain name you want, but the .com, .net and .org are taken, but the .info is available, do you think that since the other tlds are taken that value is added to the .info in this case?
depends on site , content , niche if you have some good plan in mind and no matter if its .com , .net or .info all will work fine what u need is just good plans to start
.info does not affect SE ranking at all, so it would be fine. But I don't think you can buy .info and resell as the value of .info are low.