I would say it's too late to get into mining right now especially if you still don't know much about the mining process and configuring miners.
However, if you really want to get into it i would first invest in a simple GPU rig. Investing in GPUs has less risks involved because GPUs will always have value because they can easily repurposed for multiple other tasks (gamers, data scientists, etc). Also, GPUs will always have the potential to mine new and obscure algorithms.
It really doesnt take a whole lot of knowledge to start a simple rig. The mining process isn't incredibly diffcult to understand, and the same goes for configuring miners- with Google, the whole internet, and this part of the forums to work with, you can easily learn about configuration and almost anything about mining in a few days or even less. Hell if you're
really lazy, you can just download one-click software and mine with Nicehash, etc, and you hardly need to know anything except getting a rig to boot and/or GPU modding and tweaking.
The big thing that is threatening GPU mining right now is FPGAs, ASICs and a depression in overall coin prices and rising difficulty- this is bringing the break-even time of many cards to near one year or more at $0.10/kWh electrical costs.
