How to upload images to your posts!

Yay, i’ve only gone and done it  , i’m So happy.  Just used one I took of kingfisher last week to test. Yippee.  Will I be able to do it again???  Thanks Sammi you were right about deleting first.  
A very happy SUE
Ps, is there any way to stay logged in on site as seem to have to log in rather a lot of times.