Let me advise you—be careful what advice you accept.
Advise [THINK: verb; counsel (S)]
Advice [THINK: noun; guide to action (C)]
“Advise is a verb meaning “to give counsel to; offer an opinion or suggestion as worth following.””
“…Advice is a noun meaning “an opinion or recommendation offered as a guide to action, conduct, etc.””
[read more about it on blog.dictionary.com]