I would like to get into advertising/marketing – I have a journalism degree?

I would like to get into advertising and marketing. I have a journalism degree.

Any advice? Would my journalism degree be valued in the industry?

i guess you are really close and of course your journalism degree will be valued.
A huge part of any advertising/marketing agency is the copywriting, which is the editing and composing of the messages, what words should be used as a message with any Ad to attract more customers….
So …go for it, start searching for Copywriting jobs right now; and Good luck.