1) Learn the ins and outs of a few synths you think you may like, but not too many so that you can get as good with each one as possible. This will help you think about what sounds fit best together in your own opinion (and objectively to anyone) and what aspects of the sound design of a particular sound needs improvement in your own opinion (and objectively to anyone).
2) Familiarize yourself with DAW shortcut commands so that your workflow isn't hindering your learning speed as much as if you didn't know any DAW shortcut commands.
3) Do A/B comparisons of EQ changes, compression edits, reverb tweaks, etc. until you realize which one you subjectively like better and which one objectively sounds less detrimental to the sound. Make sure you can say that you subjectively like better the one that objectively sounds better. That way you aren't teaching yourself backwards, and you can tell (without explicitly comparing to another similar sound/atmosphere) whether or not your edit will be more universally well-received. This is a form of ear training. Having good audio equipment in the first place will help.
4) Actively listen to tracks you admire the production of, and try to analyze why something works well or why something doesn't work well (subjectively to you or objectively to anyone).
5) Learn at least basic music theory. i.e. What key are you in, is it major or minor, what's the tonic / root note, and what sounds harmonically reasonable.