I am on coinbase now, which is where I own coins they trade. I want to purchase several different altcoins. But they are mostly on different exchanges. Is there some way to keep the number of exchanges to just a couple, or do I need several and then have to fund each one???
If you have a amount which is comparatively higher then you can use multiple exchanges for trading ,if not you don't have any problem with it. Exchanges are anyhow aren't the best place to keep your money. Better be on a watch for your money. Use a hardware wallet as when possible.