Yes, there are several ways to do this depending on the platform you are using. Some social media platforms have a "draft" feature where you can save your post and come back to it later. Alternatively, you can use a scheduling tool to set a specific time for your post to be published. Another option is to save your post as a draft in a document or note-taking app and copy and paste it when you are ready to post.
Again, it depends on the platform you are using. Some platforms have an auto-save feature that saves your post as you type. If the platform does not have this feature, you can save your post periodically by clicking the "save" button or using keyboard shortcuts like "Ctrl + S" for Windows or "Command + S" for Mac.
Yes, most social media platforms allow you to edit your posts even after they have been published. However, keep in mind that some platforms, like Twitter, do not allow you to edit the text of your tweet once it has been posted. In this case, you can delete the tweet and repost it with the correct information.
It depends on the platform and the type of post. For example, on Facebook, you can go to your "Activity Log" and filter by "Deleted" to see if your post is still recoverable. On Twitter, you can try contacting their support team to see if they can retrieve your deleted tweet. However, it is always a good idea to double-check your post before hitting the delete button to avoid this situation.
If you are using a social media platform, your post will be saved on their servers, so you can access it from any device as long as you are logged into your account. If you are saving your post in a document or note-taking app, make sure to save it in a cloud-based storage service, like Google Drive or Dropbox, so you can access it from any device with an internet connection.