I think the biggest question you need to ask yourself is: Why do you want to open a nanobrewery? Are you wanting to just try out larger, more commercial equipment? Are you wanting to actually sell your beer? Do you have plans to give up your day job and open a brewery permanently?
If you want to just try out the larger equipment, find a brewery in your area and volunteer. They will, usually, take free labor that's knowledgable about brewing.
If you want to sell your beer, why? There's no reason why you should want to sell your beer unless you want to go commercial.
If you want to start the brewery and have this be your full career, I'm going to tell you to don't do it. Everybody will tell you to go after your dreams, but I'm going to be the guy to tell you to not do it. Your job right now is to prove me wrong. If you have a very comfortable day job where you can do this on the side and you want this as a corporation with separate liabilities, I actually wouldn't oppose this. But in general, you need to have about $50-100K you don't mind burning. You will need $50-100K for the initial build out. You will also need that much as a good cushion for a yearly cash flow. Thus, you need $200-300K+ in the bank to last you for two to three years or so. This all has to be cash that you and your significant other don't mind you burning over the coming years.
If you don't have this type of cash or can't find investors to give it to you, then just stick with home brewing. This is your first test of proving me wrong. If you have a gigantic cushion of money, then you've passed the first hurdle. If you're going to nickel and dime this, then stick with home brewing.