My keyboard randomly types a, and the 1,4, and capslock buttons are sticky. I think that something spilled onto the keyboard when I wasn't looking. I am very serious in taking care of this keyboard, and I am not sure how this could have happened.

Regardless of what may have happened, it does appear that something got down into the keys of your keyboard to cause this issue.

Is this keyboard a Magic Keyboard or another make? Regardless, it may be difficult to remove the foreign debris. Dust, dirt, can potentially be removed by using a soft brush or judicially applying blown air. However, if it was a liquid spill, especially something like coffee (with cream and/or sugar), or juice, or a soda, even if the liquid evaporates, it could leave residual conductive debris that may be impossible to remove.

... so what can be done at this point? One option would be to contact Apple Support directly (or better still to visit your local Apple Store or Apple Authorized Service Provider, to see if they can assist you with this matter. If you would rather contact support directly, you can simply do so by selecting the "Support" link on the lower left-hand side of this forum's web page.