Basement windows

[Mr Good]

Hello,

In the basement of my investment property (built 1951) all of the windows are single-pane with hand-crank windows. I just bought the place.

The windows upstairs open up nicely but in the basement they are really hard to crank open. I suppose they may just need to be lubed up? Any tips on that?

Also, if I want to change to double-pane windows, what is the most affordable way to switch them?

Thanks for any advice!