do effects come in after or before recording whats effects to use on vocals

you can put them before recording if you want, but most people track vox dry or with natural live room reverb and apply effects later.
Vocal FX include, but are in no way limited to: reverb, delay, pitch shifting, harmonizing, eq, etc. You can get weird with wahwah, distortion, filters, LFOs and any other effect you want. That's the beauty of the studio, and mixing is as much of an art as songwriting.

Well, I would suggest recording them dry, without any FX and add any FX that you would like during mixing. This way you can try several things and end up with something you like a lot. Just imagine to record some vocals with FX and to realize that the FX doesn't actually do the job...