Welcome to ECF!
Here's one piece of advice I wish I had gotten earlier:
Before trying lots of different juices, pay attention to the head and wick first. A lot of people get frustrated trying many different flavors and vendors, and finding that everything tastes either meh or bad. I discovered that getting the right head/coil/wick can make a tremendous difference in the flavor of all (or nearly all) e-liquids.
It does mean you need to learn to re-wick (and perhaps re-coil) early in your journey, since IMHO there aren't any standard heads with really good wicks, and it can take a bit of learning to get these to work right (It isn't that hard, but it's nowhere as easy as it looks in the U-tube videos!) I'd recommend rayon or at least cotton wicks.
Having a head that really shows off the flavors can avoid a lot of needless expense and frustration going through liquids. I went from liking maybe 10% of the ones I have, to liking nearly all of them. (Still a couple of clunkers in the bunch though...)