angrybirds

Hi there, I've been using Belkin, Cisco Linksys routers they were great for 10 devices. They are not working (frequent disconnections) when 30 devices are connected simultaneously and I was advised to try Unifi Access Points. Before going ahead and ordering a Unifi Pro, I had few doubts. Would appreciate if anyone could clarify those: I've read Unifi Pro is not a router while just an just an Access Point. What does this mean? Do I have to order a seperate router? If yes what would you suggest? I'm from India and we've a fiber broadband connection. I read somewhere you will also need a switch (http://www.ubnt.com/accessories/toughswitch/ or something else like that) because they don't have a separate electricity and ethernet input (electricity is given over the ethernet itself). - I'm confused what does that mean? Apart from a router and the switch what else will I need to configure Unifi Pro and start using it as my Wi-Fi connection? Thank you so much!