Surprisingly simple once you have the tools. Get a good manual, think about what you will address and have the tools and parts on hand, some of the older posts will detail what tools and parts are needed for most maintenance issues, some of the lubricants and fluids can be hard to find in the US, you'll just need to dig a little to find them but stay with the recommended fluids, use the BMW coolant, I like the Motul oil, I use K&N oil filters, find the spark plug socket before you need it, at only 370 miles you won't need anything for about 5,000 miles, shop sales for tires (I keep a set under the work bench; once these are mounted I start checking prices for the next set), if it's a 2013 the brakes will need to be flushed with new brake fluid ( a decent shop would do that as a matter of age of the fluid, and part of their "dealer service charge").
Look at older posts, there is a variator holding tool, a 33mm (I think) socket and a special Mobile oil company grease needed to change the drive belt. Order a Mitsuboshi drive belt, don't try the cheap belts on EBAY, they WON'T last. Dr Pulley sliders and guides are a good drivability upgrade for not a lot of money and when done with the drive belt are nothing to install. Fun scoots, a little complicated but no harder to maintain than most other scoots and much easier than some. Some dealer parts are expensive (BMW= Break My Wallet or Bring More Wampum), but for some items they are the only source.