Our installation documentation is here, which is the place to start as it gives some broader background information.
Using that, will need to go to the “manual installation” section for Samsung devices, which will then give more detailed device-specific instructions. Here is a direct link to the Samsung S5e section.
If you have any notes on what steps need more detail or clarification I can submit a request to our documentation writer to consider updates.
But yes the Samsung process is a bit more involved as it isn’t supported by the graphical installer, and unlocking, etc. can be slightly more involved than on other devices.