First time user of iCloud needs directions
I have not used iCloud effectively. I really do not understand how to access it, what sort of files or data can be stored there, and if I use this macbook to put data onto iCloud, am I only able to use this macbook to retrieve that data. I am looking to find and locate a space where I can put data and share it with other Apple devices I own. Is the iCloud that place, can I access data put there by one device and using another device have access to it?
Please help this novice with iCloud do's and don'ts and/or how to use it. Thank you for taking time to help!
MacBook Pro