np Mia. welcome to forums by the way!
here is good DIY on cleaning TB & IAC:
How to: Cleaning Throttle Body -4 Cylinder Engines- With Pictures
this one gets sticky and dirty quite often depending on your geo location. it is recommended to clean it up at least once a year to keep throttle plate and IAC valve operations fully functional.
fuel filter is a pain to do, leave it to mechanic if you don't feel up to it. use good WIX (e.g. from NAPA) or OEM/toyota/denso fuel filter, it will serve you longer. those are supposed to get changed every 30k miles. cheap filters usually are said to be replaced every 15k miles for best performance.
if spark plug wires have not been ever changed yet, then you may replace them too with e.g. NGK brand (check local Advanced Auto Parts), same as spark plugs (NGK or Denso are best) or from amazon cheap (for 4cylinder model):
plugs:
4x $10.32 each
wireset:
$29.95
replacing spark plugs, wireset and all filters are part of a recommended tune up every 30k miles