Watch ALL of the Kemper videos to get started.
When you've completely understood those, move onto the Tone Junkie Kemper tutorial videos.
There is no need to put every profile you think you like on the Profiler. Create folders in Rig Manager (by right clicking on your local library, and adding a folder, name it something like "NEW" so you know what it is) and sort through them there. Only put the ones you really love and think you will use on the Profiler. It will save you from the "my Kemper is full" forum message.
Don't be afraid to ask questions, but make sure you use the search on the forum, most likely you're not the first with that question.