I'm sorry if this is a dumb question but how do I time demos? Do I need to install a program or do I just use a timer? Also, How do I find out how many ticks are in a demo?

There's the Portal Demo Timer in Resources section

Alright I got Listdemo+ but is there any specific folder I have to extract it to?

Don't use listdemo, thats more useful for segmented runs. Use the resoruce below it, that is actually titled "Portal Demo Timer" it doesnt matter where you extract it from there, you simply open the program, and then: -go to file -> open -select your demos

Oh ok, thanks for the quick reply

dead thread but can I time demos on mac? Cause the Demo Timer is a .exe