Playlists/stations

[H2359]

Hi i am new to spotify and am new to the spotify comunity
I use the spotify app on my iphone using voiceover because i am totally blind
I have to questions about the app 1 can you add artists to a playlist or is it just songs
The second question is can you add artists to a radio station like you can on pandora for example creating a littlemix station and adding the artist cam to that station
Thanks for any help that can be given