If planet hoster is a free service (which I couldnt figure out from their website) then their resource allocation must be very limited to let you play around with some application like moodle. If you want to try uploading your own content on moodle, why not give a try to moodlecloud? as they do offer a free moodle instance as well.
Regarding steps, there must be documentation available as moodle documentation has improved much over time, but then I doubt if there will be available for Cpanel hosting or not, even if it isnt, and I assume your hosting provider have given you access to CPanel (if they have softaculous then they must have), then you may have to wait for a few days, as I had some video tutorials installing moodle manually on shared hosting, but as they were more than 4 years old and moodle installation steps has changed a bit since then, so I decided to re-do those tutorials so they can assist someone like yourself, few people who had watched those had asked me to provide them again so I thought of re-doing them from start for absolute newbies. so if you can wait for a few days you'll have something to get assistance from, else if you want things done over weekend, then you can pvt message me your hosting credentials and I will do the install for you.