Speaking and pronunciation is probably the area I'm worst at regarding English, so after doing a course about British English pronunciation, I recently grabbed and just finished another: English Fluency Master.
3 hours of tips and tricks to improve fluency: word blending and "jumping", proper pronunciation of sounds, intonation, tone, stress, and some tongue twisters. But what I liked most about the course is the teacher, Luke. The way he explains everything, repeating multiple times at different speeds, with jokes and funny voices, remarking what we should avoid, etc., is a perfect combination of informal but helpful teaching.
Equal parts enjoyable and useful, definitely recommended.