I havent played dyson sphere but ive seen a bit of it on youtube, I watched the very early game of nilaus' playthrough. The concept looks interesting but the fact theres no grid for machines to snap to bothers me for some reason so I never got too into it.

Multiplayer factorio is fun and really easy to get into, I would say its even easier than singleplayer. Its a great way to learn the game from players more experienced than you, and to teach players with less experience. Literally just go to the multiplayer server list and join one, theres always something to do no matter skill level.