As a creator, if you'd like to upload your content, visit the SoundCloud official webpage and sign in with your email/Facebook or Google. Then, click on the Upload button beside your profile icon.
On the next page, upload the tracks and albums you want to explore. To do it, drag and drop the files to the upload box or add manually. Once your files are added, check the playlist option if necessary and set privacy by selecting the options public or private.