<prompt> Human: I know most people recommend Total Stock Market and Total International Stock Market ETFs for investing. However, im also curious about other slightly more specific ETFs for sectors that i think will be profitable and have room for more growth in the future. There seems to be about a million ETFs out there and not all of them are named intuitively. Id be interested in an ETF for the energy sector, but cleanrenewables specifically if that exists. Ive found this energy sector ETF but it seems to be exclusive to the oilgas industry. Id also be interested in a good technology ETF. I found this one that seems to cover everything from home entertainment tech to semiconductors to Technology Hardware, Storage Periphera. Does anyone have any recommendations or opinionsexperiences with some of these sector specific ETFs?  <response>: Sector funds are certainly riskier. 