u/L-in-the-chat

I've purchased a HP compaq Elite 8300 SFF a long while ago and just recently got interested in upgrading slowly.

currently I have:

Processor: Intel(R) Core(TM) i7-3770 CPU @ 3.40GHz 3.40 GHz

RAM: 16 GB (DDR3, idk if that helps clarify)

Storage: 477 GB SSD KingFast

Graphics Card: Intel(R) HD Graphics 4000 (32 MB)

I'm interested in just upgrading the GPU and RAM, storage not so much since i don't play games that take too much storage.

Since this is my first time, I'm wondering if I can just upgrade the GPU first? and if so what are the steps?