Solved! Graphic Artist looking to buy SmartTV/Monitor

Dec 29, 2018
Hello, looking to buy a smart TV that can also purpose as a computer monitor. I am an old-schooled Graphic Artist, Designer...Transitioning out of CS6. My house was ripped off, and all electronics were stolen...I have an Apple Macbook Pro. I am considering going for the 2'fer. smart TV/Monitor...looking at 32" to 40" models. that have usb, hdmi, the best resolution possible. good sound,so I can continue with Graphics (Adobe product) what is Roku?
What exactly is 4K, what should I be looking for, as far as the best resolution? ease of switching back and forth. Thanks so much...Can you help me....I bought a Hisense Roku 43" . It's too big and I don't know is best for my situation.