ht leaads wtf you only change them if you need to.
tbf if your not mechanically minded them all you'll be able to do is the filters oil, and plugs.
as for checking the componants then yes most is common sense but even some may not be as 'worn' as you may think.
i'm a mechanic by trade and on my own cars i just do filter and fluid service but even so the coolant only gets changed every 2yrs, brake fluid every 3 yrs unless specified by manufactures. but saying that i service every 6 months and only do 3.5k a year lol.
but if its not been done in a while if i were you get everything done.
i'm suprised its not froze it's self with the cold weather as the blue antifreeze is only 2 year life

get that done but change it for 'pink' as thats 5 year long life stuff

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while your at it like people has said change the brake fluid. but be carefull you don't snap the bleed nipples.
change the gearbox oil aswell as it might not have enough in it
give the coolant system a flush through simple thing to do just poke a hose through untill the water runs clean