Creating effects busses / channels

Hi there. I've recently gotten into using VST effects and am starting to run into performance issues, even when freezing all channels that have said effects. I've read online about people creating effects channels / busses (from what I understand, a channel is different than a bus, though I'm unfamiliar with the difference) to save hardware resources. For instance, if you wanted to apply varying degrees of reverb to a whole drum kit, I read that people will make a reverb channel and send each drum channel through the reverb channel and you can control how wet the effect is. The result is better computer hardware resource usage since it's effectively one reverb effect and not individual reverbs for each drum track. Could anyone point me in the correct path to accomplish this? I suppose the same could be said about vocals too... if I had a preset for vocals that was like Compression + EQ + reverb + delay, and I wanted to route several vocal tracks through this preset...

Any pointers would be awesome. Thank you much... I've tried googling / youtubing this to no avail...

All you need to do is create a bus track (Alt B) and put your fx on this channel
Then for say your vocal track - at the bottom of the channel strip it indicates that that track is going out the 'master' - right click and change to the bus you have just created.  Do the same for any other tracks that will share that fx

If using a Bus for F/X like Reverb it is better to use the track Send to send the appropriate tracks to the Bus with the Effect on it. That way you can get your drum mix, for instance, mixed correctly dry and then do a separate reverb mix for the drums by adjusting the F/X Send level controls.

Thank you guys. Both answers were extremely helpful! Works like a charm.