Now for some of the "Fun" stuff...
Being a recording engineer takes time. And most of your time is caused by manually quantizing or 'bumping' each take/track so it is more in time.
BUT WHY DOES IT NEED TO BE SO PERFECT??!?!!11/!?1one??!?
Ok. Calm down. Here's a logical answer:
Let's say you have a quaver or 1/8th note delay FX on your guitar. If your guitars are out, even by a fraction of a beat, this delay will be a massive contrast to the beat itself, even if you end up back in time, that part will just sound "out." Most FX is based off the timing of the click, and therefore it is imperative that your recording is as close to the click as possible and minimal bumping is required.
Won't that take a lot of time?
In a word? Kinda. But it'll get easier, quicker and better the better you become. I can usually bump and entire song in a couple of hours (That's about 10-12 tracks). It's also the part which starts making your song sound great, and everything falls in to place, so it almost becomes cathartic.
Remember: You can fix MINOR timing issues, but not large mistakes or bad playing. If you scrub too much poo, it'll end up under your fingernails.
If people ask for a more 'raw' sounding recording (which many do), they're not referring to things being out of time and just like it's in a practice room, they're most likely looking for more of a 'real' or 'live' soundscape - reverb, panning, etc.
How to bump your take 101
Note the take I am using, my note was too early, not by much, but enough to notice. If it's too small a gap to notice, usually don't worry about it - it's extra editing you don't need.
Once you have selected an empty space close to the waveform that you can split, either right click and select "split items" or just press the letter "s" on your keyboard (it acts as a hotkey)
How to make a note a little longer...
As you can see from the right picture, these two joined or slurred notes did not land on the 3.4.75, or the 4th semiquaver of the 4th beat of the 3rd bar - it was too early. And the note finishes early as a result, dying off before the 4.1, or the 1st beat of the 4th bar.
Select the point you want to split (close to the transition between the notes) and zoom in. A LOT. Then split and drag to the position you would like the change of notes to occur.
Now, go to the edge of the take, you will see an arrow pointing in the direction you want to drag it - click and hold. As you drag it, it re-creates the take/note you played in the void, essentially creating two playings on top of each other. This allows for a more 'natural' blending.
How to shorten a note in between others
As you can see, I was very late on this note here on the left, being almost 1/32nd or a demisemiquaver out. Or, in real talk, about five hundredths of a second. Not much, but still enough still to make me sad.
Select a point just before the beat that you want to move your waveform to, and split it and drag the take with the waveform you want to move in to a rough position (remember, not perfect).
You end up with a giant crossfade as shown above, which will be very audible in your recording. You can minimize this however, by hovering your mouse cursor over edge of the crossfade until the icon changes, and drag it back towards the moved waveform
to minimise the disruption to your take, as shown below.
What now after all the takes are 'bumped'?
You'll probably have a really ugly eyesore of a take that looks like this:
Simply highlight everything in the take (easiest way is to click the first segment of the split, hold shift down, and click the last segment of the split), right click and select "Glue items'
Ahhhh.... much better looking AND sounding.