Learn to mix audio to a polished, release-ready sound
A few focused months — about an hour most days, roughly 120 hours — through one canonical book, a real DAW, and a library of professional multitracks you mix against commercial reference tracks, gets you from muddy bedroom mixes to balanced, competitive ones that hold up next to records you admire. This assumes you already know your way around recording and a DAW at a basic level; if not, start with music production first. One honest caveat up front: mastering is a separate discipline. This path makes you a competent mixer, which is 90% of what makes home recordings sound amateur — not the master.
3–4 months · ~120 hours · take a raw multitrack to a balanced, clear, competitive mix that stands up against a commercial reference
1."Mixing Secrets for the Small Studio" by Mike Senior
This is the canonical mixing book, and it is canonical for a reason: Mike Senior teaches mixing the way it actually works in a real, imperfect room with real, imperfect monitors, drawing on the methods of more than 160 well-known engineers. It is ruthlessly practical — balance and faders first, then EQ, compression, reverb, and the master bus, in the order that actually matters — and it never assumes a million-dollar control room. Read it cover to cover once, then keep it open beside you as you mix. Do not skim; do every listening exercise. The chapter on building a balance with faders alone will fix more of your mixes than any plugin you will ever buy.
~$45–55 for the book · the companion resources and demo files at cambridge-mt.com are free
Mixing Secrets for the Small Studio →2.REAPER — a real DAW that does everything
Mix in a real DAW, not a stripped demo. REAPER is the right pick: it is a fully professional, no-compromise DAW with a famously honest pricing model — a free, fully functional 60-day evaluation with nothing crippled, then a $60 discounted license for personal use that includes a decade of updates. Every technique in the book maps onto REAPER's stock EQ, compressor, and metering, so you never need to buy a plugin to follow along. If you already own and know another DAW — Logic, Ableton, Studio One, Pro Tools — stay there; the skills are identical and the book is DAW-agnostic. The point is to spend your money on learning, not on software.
Free for 60 days, then $60 (discounted/personal license) · stock plugins are all you need to start
REAPER →3.Mix real multitracks against reference tracks
Reading about mixing teaches you nothing until you move faders. Mike Senior runs the free 'Mixing Secrets' Multitrack Download Library — 500+ professional, multi-genre songs delivered as raw, unprocessed stems specifically so you can practice mixing them. Pick a song in a style you love, import the stems into REAPER, and mix it from scratch using only what the book has taught you so far. Then — this is the part nobody does and the part that makes you good — pull up a commercial, professionally mixed song in a similar style as a reference, level-match it, and A/B your mix against it. Hear the gap. Close it. Mix the same songs again in a month and you will be embarrassed by your old versions. That embarrassment is progress.
Free
'Mixing Secrets' Multitrack Library →If you actually want to master, not mix
This page makes you a competent mixer; mastering — the final polish on a finished stereo mix — is a genuinely separate craft, and for releases it is usually worth paying a dedicated mastering engineer or using a service. If you want to learn the basics anyway, read iZotope's free, surprisingly thorough online guide "Are You Listening?" and Mastering 101 resources, and master your own competent mixes only after this path has made them competent. Mastering a bad mix cannot save it; that is exactly why mixing comes first.
Why this path
Most people learning to mix get lost in plugins — they collect EQs and compressors and chase presets, convinced the next purchase is what stands between them and a pro sound. It isn't. The bottleneck is hearing: knowing what a balanced mix sounds like and being able to A/B your work honestly against a reference. One canonical book teaches the right order of operations, a free real DAW means you never buy your way out of a problem, and free professional multitracks plus reference tracks give you the one thing that actually builds the skill — reps with honest feedback. Faders before plugins. References always. Mastering later.