From my windows laptop, I wish to login to roku.com and very easily stream... just the ROKU channel

Simple question....

On my windows laptop... can I login to roku.com and simply stream JUST Roku content or is there a bunch of nonsense that I need to undertake in order to make this happen  ???

I do have multiple Roku streaming devices connected to different TV's and all that is fine, but now I wish to explore the possibilty as mentioned in my question above.

Thanks