Pokračuje to tak:

Go to the http uploads page by clicking on the "upload file" link in the main coppermine menu
The http uploads page will be available for you as admin at any time. This is not the case though for non-admin visitors of your gallery: it depends on the permissions you assign them if they will have the upload file link in the menu.
On the upload file screen, choose an album from the "Album" dropdown
If you don't have an album you can pick from the list, you haven't created an album yet. You have to understand that you need at least one album where your upload can go to. Go to the album manager and create at least one album first, then try again uploading.
Click the "Browse..." button and navigate to a small, known-good jpg-file on your hard drive.
Don't assume that any image will work - the term "known-good" in this case means that you should use an image that already has been processed by coppermine to make sure it is a file that coppermine can handle - this can best be achieved if you download an image from the coppermine demo on the original coppermine home page.
Submit the form by clicking on the "Upload file" button
By submitting the form you start the actual upload process - everything you did before were just preparations.