Tactics Rating vs Blitz/Bullet

Hey everyone! I'm new to the site. Always had a passion for chess, but sadly kind of stopped playing for several years. Trying to find my footing again, but seem to be getting stuck early around 1500. However, I just got to 2000 in Puzzles (Tactics). Just curious, is this a respectable rating? I can only assume the disparity between these two ratings has to do with knowing there are tricks in the position while doing tactics, whereas in my actual games I don't always know to look as deep in the certain positions.

More to the point though: any recommendations for improving my game? Any lines I should be studying more than others? I just signed up for a Platinum membership on this site, and though I haven't begun to dig deep, it appears there's a wealth of knowledge at my fingertips, but I'm not sure where to best focus my energy. Any insights would be greatly appreciated.

I think 2000 tactics rating is good. I really liked the new lessons. Clear and simple. After Advanced you have to do some testing in Master since the material is so huge.

I don't have any advice for you, but can provide you with another data point for reference. I think your 1500 blitz is pretty good! I also recently broke 2000 in my tactics (it's around 1950 right now), but I am still below 1000 in Blitz., and certainly not for a lack of trying.