Glues i use alot of cheap dollar store superglue(4 in a pack and their smaller so if i leave the lid off its not a huge waste).
Iv also started usinh amroid proweld for engine blocks etc. Im a poor modeler so i like to build a kit then 6 months to a year later i tear it down and start over so i dont proweld alot for that reason
Puttys ive been using squadron with good results someyimes it takes a couple light coats in areas dont really use much else but a good tip for filling some holes and fills marks is to heat some sprue and stretch it to size then slather the some proweld or tenax on the hole and push the sprue in till it oozes out let dry sand and shouldny need putty.
When i thin my white glue for flocking i use water and really just guess lol i find you want it to be thin and easy flowing without getting all bubbly.
Just for some info i buy big cans of dupli colors sandable primer in both "hot rod grey" and "hot rod flat black" i get them for about 7$ a can but the last a helluva lot longer then smaller cans. I find i use more of the flat black becuase i find its an excellent flat black for engine parts chassis etc. Iv also never had any problems with it reacting with any of the paints of used and is really good at sealing most styrene is you wanted to use say nail polish for painting which could melt the styrene.
Hope thats all helpful!