Learn Slovenian Online seems to be a full-fledged online paid language learning resource. The entire course costs €29.95 and is valid for a lifetime membership. It leads you through the most basic verbs and nouns to reach the fluency of nearly a native speaker. There's also an app for the course, so you can download and listen to audio files of words being spoken by native speakers to help improve your pronunciation.
The same organization also offers 30 minute Skype or in person lessons for €5, and 60 minute Skype or in person lessons for €15.
They also sell a conjugation manual for most, if not all, verbs in the Slovenian language for €7.50.
If you're looking for a more official resource, consider looking into the Centre for Slovene as a Second and Foreign Language, which offers both online and in person lessons, books, and courses.