I'd get a carb rebuild kit.. and rebuild your carb.. it's a simple 2 barrel..
you CAN do it. and it's the only way to learn..
if you have a digital cmera.. and or a cell phone that takes pic's.. take pics as you take it apart.. and note on paper where stuff came from/goes..
you CAN do this...
get a manual for your car.. it's a g.m. "A" body.. so manuals won't be all that costly..
even a motors amnual covering your year will be a big help with tune up's and general upkeep..
if you can follow directions ,there is nothing on these cars you can't do yourself.. and you'll learn alot..
not only that.. but you have the internet that has forums like this one..
and buick only forums that can be a big help on finding parts..
as most have been down the road you'll go.. and not everyone builds a fire breathing car..
good luck with it..
and ry to do as much as you can, as you'll learn a ton.. and you'll be happy you did it..