1. Go to Imgur
2. Tap the button that says "Upload"
3. Tap "device", then select the image you want to upload
4. Tap "Start upload"
5. Once it's uploaded, bring down the menu beside the image link on the top of the picture and change it from "Link" to "Direct link"
6. Copy the link, then put it in between the [img.] [/img] code (remove the period beside the letter g) on your post.