So I was able to get the bike for $40. Thank you for the help, I felt like I got a good deal but it could use some advice. The bike needs some help and I im kind of lost in this new world of cycling.

Anyway, to correct any measurements conundrums I took this pic and added my tape.

Mind the colours!

I want to add a quick release to my front tire, would I have to buy a whole new rim or just the bolts?
Here is a close up:


Any recommended shifter upgrades?



Here is just another angle of the bike:



A full rotation of the crank does not seem to go smoothly. Would this be chain related? Gears? Oil?
What kind of basic upgrades should I add?
Again, any help would be great.

Sorry for the size of the images but I guess it helps with close ups.