ILR Application

Hi! It's getting about that time for me to apply for ILR and just had a few questions:

1) When is the earliest date I can apply for ILR?

My current BRP is valid until 27-05-2024 and I arrived in the UK on 3rd April 2019.

2) What evidence do I need to supply this go around? What are the steps to applying for ILR?
3) Is evidence uploaded or posted out? If uploaded, at what stage do I upload my evidence? Is it after submitting the online application?
4) Does anyone have a link to the online application I need to fill out?
5) How soon after being approved for ILR can I apply for citizenship if I am on a spouse visa?


Thanks so much for any help anyone can provide!

Bump 

This is a great overview. I think it will answer most of your questions.

https://talk.uk-yankee.com/index.php?topic=100139.msg1318942#msg1318942

@larrabee Thank you I will have a look! Based off the 28 days prior to arriving in the UK rule, does that mean I can apply from 7th March?

You arrived on a spouse visa. That sounds right.