Sorry. I don't think we have much instructions, precise or general, because every take of the singer, every room, every brand of mic or compressor, every brand of reverb etc are different.
Actually, what do you expect us to answer when we don't know anything about your equipment or studio?? We don't even know if you're a she or a he.
The pros here very easily recommend you use a certain 2000$ hardware compressor, or a Waves plugin set that costs 800$ unless you give some guidelines about your situation.
General tips: If you clearly hear the effect, you're overusing it, compress according to need, don't use too much reverb unless you want an echorich sound, etc.
If you post your mixes to the Songs-forum the gurus surely can share their views of the results and give you some very useful feedback.
The only thing I can say based on your post: If you want in-your-face-feeling, you're not going to need much reverb. Reverb tends to push sound to the background. Delay is maybe more useful.
Also: Plosives and similar disturbances can be very problematic in rap-vocal recording, so the mic-technique of the singer should be reasonably good. Some mics are better than others in that respective, but unfortunately I'm unable to give hints about mic choices.
post edited by Kalle Rantaaho - 2012/01/08 17:29:05