Three factors will have the biggest impact on your experience:
Your computer / mobile device
- the newer the better
- the more regularly updated and restarted the better
How do I ensure my computer is good for online learning?
Your internet connection / data plan
- the more data the better
- Fixed line broadband, fibre in particular, is best
What's the best internet connection / data plan for online learning?
How well they work together, e.g. how your home Wi-Fi is setup, is pretty important too.