Macbook Pro's keyboard and trackpad aren't functioning well, please help, thank you!

Question

Dear Apple Support and Apple Communities,
hopefully this question will be easily understood and will be answered with answers that can help, useful and beneficial. I will explain the problem, story that I guess began the problem, specs and information of the Notebook and so on.
I love products produced by the brand, Apple, but they can get broken, ruined or destroyed. So, I do try my best to take care of devices that I have well. Although, my father bought a Macbook Pro last year, around November or December, 2013(I THINK). I don't think it's very old, maybe 3 - 5 months, but it should be in a good condition. I have dropped it many times, hopefully that won't effect the problem. Now, the problem, the Notebook is a beautiful device that I would love to keep using, but I don't really know how to use it properly and in the CORRECT/RIGHT/GOOD/SAFE way. If possible, can you list methods/ways to do those things? If so, thank you! Anyway, back to the topic, the Notebook's keyboard has a problem, some keys aren't responding, especially the alphabets/letters, I guess some other keys worked because I did the PRAM RESET. Anyway, the trackpad is also not functioning well, sometimes, when I right click the trackpad or when I click the entire surface with one finger(RIGHT CLICK OR SOMETHING ELSE), it would left click, I found a way to fix is, put the Notebook to sleep by closing the cover, hopefully that's alright. Anyway, it all began, I guess, when I was brushing my teeth. I dislike to waste time, so I used the Notebook and brushed my teeth simultaneously. I guess Saliva was being produced because of the acidic substance(TOOTHPASTE)? Anyway, my mouth had a lot of liquid in it, could have been Saliva, water and toothpaste. So, Physics, natural forces, Gravitational force occurred, some of the liquid left my mouth and onto the keyboard. I didn't panic because I think I heard that keyboard could not or did not suck in a lot of liquid, but I did clean it up. Anyway, the Notebook including the keyboard and trackpad were functioning like normal. I guess after three hours, something happened to the Notebook. I think I was using Safari in FULLSCREEN MODE and suddenly an application or software for another application appeared. It was requesting permission for an update, I think. I updated it and suddenly, the Notebook went haywire. Probably not immediately, but I guess the Notebook did go haywire. I tried searching for ways to fix it, but not much could fix or solve the problem. Hopefully your answer-s will fix or solve the problem, thank you.
Specs :
MacBook Pro
13-inch, Mid 2012
Processor  2.5 GHz Intel Core i5
Memory  4 GB 1600 MHz DDR3
Graphics  Intel HD Graphics 4000 1024 MB
Serial Number (COULD BE DANGEROUS AND RISKY TO BE GIVEN)
Software  OS X 10.9.2 (13C64)
Built-in Display
13-inch (1280 x 800)
Intel HD Graphics 4000 1024 MB graphics
Memory (4 GB)
The Mac contains 2 memory slots, each of which accepts
a 1600 MHz DDR3 memory module. All memory slots are currently in use.
INFORMATION
The Notebook has a few dents, I guess. I tried to open the keys to check for toothpaste or liquids. My brother told me that toothpaste is dense, probably the answer? My other brother told me that the keyboard and/or trackpad are/is "shocked"(LIQUID AND ELECTRICITY, NOT SUCH GOOD COMBINATIONS). Hopefully this is enough to be counted as detailed and informative. Thank you for your time! Take care!

Answer 1

Take it to an Apple Store for diagnosis and repair. This will not be free, dropping the Mac and dropping liquids on it are not covered by the warranty.