Hi, just to throw in another perspective on "sitting" the vocal into the mix...
Where you place the lead vocal in the mix is highly dependent on the song of course, but also the style of music you're working in. There are 5 main methods of getting the vocal to sit better, for instance, using vocal rides to "ride" the volume form one section of the song to another, using delay and reverb to add space around the vocal, use of panning to place it left to right, and of course EQ and compression to add clarity and depth.
The way I do it in my mixes is firstly, I listen to a lot of songs in that style first! This is critical for techniques used in the style you are working with. Secondly, a slightly different approach to Boydie, I start with the Drums, as the most important thing in mixing most styles of music is the Vocal, but then a very close second is the Snare! These two elements are usually "compete" as the loudest elements in most mixes. Therefore its imperative to get the snare sitting well within the drum kit first! Then I add in the Bass guitar and build the rhythm section so its nice and tight.
Thirdly I bring in the lead vocal, at this point, I try to get it to sit in the correct position in the stereo image, then I think about EQ just to get it sound reasonably good for now, as the mix builds around the vocal, I constantly go back and tweak EQ frequencies to keep it in the forefront of the mix! By the end of it, the vocal solo'd by itself might not sound great, but in relation to the other elements it blends well and you can discern every syllable of the lyric (very important)!
If you add compression, ask yourself, what do I want to achieve with compression? as it can be used in different ways to create different effects. Sometimes if its been recorded with comp, it might only need a slight smudge of comp to bring it further in front of the other elements and closer to the listener.
If not then, you can use compression to control the dynamics, but be careful as you can suck the life out of a vocal performance by squashing all of the transients with a compressor! Therefore its best to just get it so that it works with the "timing" and rhythm of the vocal. That means, get the compressor to "breathe" in time with the vocal and indeed the song by setting the attack and release times correctly! You'll need a high threshold, and a high ratio, at least 10:1 to set the attack and release times, in time with the song.
Finally, a tip on delay and reverb. Most of the time, I actually try to keep the vocal dryer and more intimate/closer to the listener in the verses. Then I actually process the vocal differently in the choruses (depending on the song and the recording). But in general, I don't just use reverb. I use a combination of delay and reverb. Firstly I send the vocal to a short medium stereo delay, say about 140 ms. Then I send the delayed return to a plate reverb with hardly any pre-delay on it. But around 2 - 2.5 secs decay. This has the tendency to give the vocal much more depth and a larger space around it, making it more "open" in the mix!
Hope this helps as well as all the other great advice you've already received! :-)
Tony