What do I need to know about ILR?

[Terpe]

Sorry for full caps I'm visually impaired. I have a friend who came in 2011 and wants to know how to apply for indefinite leave to remain. What does she need to know and also costs and also she is a nanny

Hi there, welcome aboard Filipino UK

Better get your friend join the forum and provide some detail.
Step-by-step approach is needed......

First step is to review the UKVI/Home Office website for settlement (ILR)
Then ask any specific question / clarification