I often get asked how I go about mixing a song. The process is very fluid and I am constantly bouncing back and forth between instrument groups. Here is a macro guide on how I approach a mix from a linear standpoint.

Begin by organizing your project. This means importing all of your audio files into your digital audio workstation (DAW) and arranging them in the order that you want them to play in. Make sure that all of the tracks are properly labeled and that you have a clear understanding of the structure of the song.
Next, you'll want to set up your mixing workspace. This includes adjusting the layout of your DAW to suit your needs and setting up any hardware devices that you might be using, such as a mixing console or outboard effects processors.
The next step is to address any issues with the individual tracks. This includes cleaning up any noise or unwanted sounds, fixing any timing issues, and applying any necessary effects or processing to individual tracks.
Once the individual tracks are sounding good, it's time to start balancing their levels and panning them in the stereo field. Use your ears and a good set of monitors to adjust the levels of each track until they are balanced with one another and sit well in the mix.
The next step is to add any necessary processing to the mix as a whole. This might include using an equalizer to shape the overall frequency balance of the mix, adding compression to even out the levels of the various instruments, or using reverb and delay to create a sense of space.
As you work, be sure to take breaks and listen to the mix on a variety of different systems. This will help you get a better sense of how the mix will translate to different listening environments and allow you to make any necessary adjustments.
Finally, once you are happy with the mix, it's time to bounce down the final version and save it. Be sure to save multiple copies and label them clearly so that you have a backup if anything goes wrong.

Mixing a song can be a complex and time-consuming process, but with a little patience and practice, you can learn to create professional-sounding mixes that will impress your listeners!