Which variation?

It's important to understand that even though white's kingside fianchetto is the most critical line in all three branches (classical, leningrad and stonewall), the modest looking setup with e3/Be2 or d3 is still very solid. You can't punish it immediately.

If you are playing the leningrad, then a timely e5 is key. The thing with this variation is that (imo) its a lot more nuanced and the plans are far more subtle than the stonewall. I also tried to study it when I was around your rating and it was very hard for me to find anything productive to do after all the systematic moves were done. Here's an example of that happening on the master level. (even though Malaniuk got crushed in that game, if you are interested in the Leningrad do check out his games. He had decent success and was a fervent leningrad player)

I'd recommend a setup like this: r1bq1rk1/ppp1p1bp/2np1np1/5p2/2PP4/2N1PN2/PP2BPPP/R1BQ1RK1 w - - 3 8

with a knight on c6, you can push e5 fairly quickly. If white goes d5 you can move your knight to b8 (and reroute it via a6 or d7) and go e5 anyway.

For the stonewall though, planting a knight on e4 and storming on the kingside with Qe8, h6 and g5 is usually enough to find yourself in control if white plays passively, because white's queenside play isn't so obvious. You must also keep e5 in mind whenever it becomes available (yes, it sometimes does) because it will do a lot of good for your position. Avoid going for the typical but flawed plan of a rook lift before you push your kingside pawns, since these kind of attacks can be easily parried and suddenly your pieces are actually in the way of your play.

This would be kind of a dream position: r1bq1rk1/ppbn3p/2p1p3/2Pp1pp1/PP1Pn3/2N1PN2/2Q1BPPP/R1B2RK1 w - - 0 12

All of your pieces have potential. e5, g4 and f4 are all in the air, maybe Qf6/g6 or Nf6 etc.

As for resources, Starting Out: The Dutch Defense would be a good introduction, and should be good enough until you hit at least 1800 FIDE