There are quite a few commands that are popular among bhoppers. If you want to use these commands, you going to have to have the "console" enabled. To do this, go to your options, keyboard options to be exact, and go to advanced settings. Check the "Enable developer console" box. Now to open the console, press the ` key, or the key with the ~ on it. Once you have it open, you can type the following commands. fps_max 34.8
Helps you out with timing your jumps. bind mwheelup "+jump"
Makes it so when you scroll up, your jump is spammed and you can have even better timing. bind mwheeldown "+jump"
Same as above, but with scrolling down. bind q "+left"
Helps with prespeeding and airstrafing.
P.S. Making sure you include the "" is important, or else it will not work.
Edit : Highlighted the important keywords.