Start off by keeping up (and contributing) to the Tuesday Music Share that happens in this very forum.
Beyond that, one big success for me is to follow producers and labels on whatever MP3 store you like to buy from. The “My Beatport” or “My Traxsource” functions…because they measure your sense of taste based on what you pick, and then toss you new stuff you might like. I know when I log into my preferred MP3 stores, I’ll go to my personal sections over the Top 100. The emails I get from those sites help also as a starting point.
I also like to “shop DJ sets” of DJs I like. When a DJ I like posts a set (with a tracklist), I’ll listen and pick up tunes from the set that I like.